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See detailGastric interoception and gastric myoelectrical activity in bulimia nervosa and binge eating disorder
van Dyck, Zoé; Schulz, André; Blechert, Jens; Herbert, Beate M.; Lutz, Annika; Vögele, Claus

in International Journal of Eating Disorders (2021), 54(7), 1106-1115

Objective: Identifying factors that control food intake is crucial to the understanding and treatment of eating disorders characterized by binge eating. In healthy individuals, stomach distension plays an important role in the development of satiation, but gastric sensations might be overridden in binge eating. The present study investigated the perception of gastric signals (i.e., gastric interoception) and gastric motility in patients experiencing binge eating episodes, i.e. bulimia nervosa (BN) and binge-eating disorder (BED). Method: Twenty-nine patients with BN or BED (ED group) and 32 age-, sex-, and BMI-matched healthy controls (HC group) participated in the study. The onset of satiation and stomach fullness were assessed using a novel 2-step water load test (WLT-II). Gastric myoelectrical activity (GMA) was measured by electrogastrography (EGG) before and after ingestion of non-caloric water. Results: Individuals in the ED group drank significantly more water until reporting satiation during the WLT-II. The percentage of normal gastric myoelectrical power was significantly smaller in the ED group compared to HC, and negatively related to the number of objective binge-eating episodes per week in bulimic patients. Power in the bradygastria range was greater in ED than in HC subjects. Discussion: Patients with EDs have a delayed response to satiation compared to HC participants, together with abnormal GMA. Repeated binge eating episodes may induce disturbances to gastric motor function.

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See detailMood-induced changes in the cortical processing of food images in bulimia nervosa
Lutz, Annika; Dierolf, Angelika; van Dyck, Zoé; Georgii, Claudio; Schnepper, Rebekka; Blechert, Jens; Vögele, Claus

in Addictive Behaviors (2021), 113

Background Negative mood often triggers binge eating in bulimia nervosa (BN). We investigated motivational salience as a possible underlying mechanism using event-related potentials (ERPs) as indicators of motivated attention allocation (P300) and sustained processing (LPP). Methods We collected ERPs (P300: 350–400 ms; LPP: 600–1000 ms) from 21 women with full-syndrome or partially remitted BN and 21 healthy women (HC), matched for age and body mass index. Idiosyncratic negative and neutral situations were used to induce corresponding mood states (counterbalanced), before participants viewed images of high- and low-calorie foods and neutral objects, and provided ratings for pleasantness and desire to eat. Results P300 was larger for foods than objects; LPP was largest for high-calorie foods, followed by low-calorie foods, then objects. The BN group showed an increased desire to eat high-calorie foods under negative mood and stronger mood induction effects on ERPs than the HC group, with generally reduced P300 and a small increase in LPP for high-calorie foods. Effects were limited to circumscribed electrode positions. Exploratory analyses showed clearer effects when comparing high vs. low emotional eaters. Conclusion We argue that negative mood decreased the availability of cognitive resources (decreased P300) in BN, thereby facilitating disinhibition and food cravings (increased desire-to-eat ratings). Increased sustained processing might be linked to emotional eating tendencies rather than BN pathology per se, and reflect approach motivation, conflict, or regulatory processes. Negative mood appears to induce complex changes in food image processing, whose understanding may contribute to the development of tailored interventions in the future.

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See detailFight, Flight, – Or Grab a Bite! Trait Emotional and Restrained Eating Style Predicts Food Cue Responding Under Negative Emotions
Schnepper, Rebekka; Georgii, Claudio; Elchin, Katharina; Arend, Ann-Kathrin; Wilhelm, Frank H.; Vögele, Claus; Lutz, Annika; van Dyck, Zoé; Blechert, Jens

in Frontiers in Behavioral Neuroscience (2020), 14

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See detailDistinctive body perception mechanisms in high versus low symptom reporters: a neurophysiological model for medically-unexplained symptoms
Schulz, André; Rost, Silke; Flasinski, Tabea; Dierolf, Angelika; Lutz, Annika; Münch, Eva E.; Mertens, Vera C.; Witthöft, Michael; Vögele, Claus

in Journal of Psychosomatic Research (2020), 137(1), 110223

OBJECTIVE: The neurophysiological processes involved in the generation of medicallyunexplained symptoms (MUS) remain unclear. This study tested three assumptions of the perception-filter model contributing to MUS: (I.) increased bodily signal strength (II.) decreased filter function, (III.) increased perception. METHODS: In this cross-sectional, observational study, trait MUS was assessed by a webbased survey (N=486). The upper and lower decile were identified as extreme groups of high (HSR; n=29; 26 women; Mage=26.0 years) and low symptom reporters (LSR; n=29; 21 women; Mage=28.4 years). Mean heart rate (HR) and heart rate variability (HRV), and cortisol awakening response (CAR) were assessed as indicators of bodily signal strength (I.). Heartbeat-evoked potentials (HEPs) were assessed during rest and a heartbeat perception task. HEPs reflect attentional resources allocated towards heartbeats and served as index of filter function (II.). Interoceptive accuracy (IAc) in heartbeat perception was assessed as an indicator of perception (III.). RESULTS: HSR showed higher HR and lower HRV (RMSSD) than LSR (I.), but no differences in CAR. HSR exhibited a stronger increase of HEPs when attention was focused on heartbeats than LSR (II.); there were no group differences in IAc (III.). CONCLUSIONS: The perception-filter model was partially confirmed in that HSR showed altered bodily signals suggesting higher sympathetic activity (I.); higher HEP increases indicated increased filter function for bodily signals (II.). As more attentional resources are mobilized to process heartbeats, but perception accuracy remains unchanged (III.), this overflow could be responsible for detecting minor bodily changes associated with MUS.

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See detailAltered interoceptive awareness in high habitual symptom reporters and patients with somatoform disorders
Flasinski, Tabea; Dierolf, Angelika; Rost, Silke; Lutz, Annika; Voderholzer, Ulrich; Koch, Stefan; Bach, Michael; Asenstorfer, Carina; Münch, Eva Elisabeth; Mertens, Vera-Christina; Vögele, Claus; Schulz, André

in Frontiers in Psychology (2020), 11(1), 1859

Objective. Altered interoception may play a major role in the etiology of medically unexplained symptoms (MUS). It remains unclear, however, if these alterations concerns noticing of signals or if they are limited to the interpretation of signals. We investigated whether individuals with MUS differ in interoceptive awareness as assessed with the Multidimensional Assessment of Interoceptive Awareness (MAIA) questionnaire. Methods. Study 1: 486 individuals completed the Screening for Somatoform Disorders (SOMS-2). 32 individuals each of the upper and lower decile of the SOMS distribution (low symptom reporters/LSR, high symptom reporters/HSR) completed the MAIA. Study 2: MAIA scores of individuals diagnosed with somatoform disorder (SFD; n = 26) were compared to individuals with major depressive disorder (MDD; n = 25) and healthy controls (HC; n = 26). Results. HSR had lower scores than LSR on the MAIA scales Not-Distracting and Not-Worrying. The SFD and MDD groups showed lower scores than HC on the MAIA scales Not-Distracting, Self-Regulation, and Trusting. The MDD group scored lower than the other two groups on the scales Body Listening and Attention Regulation. There were no group differences on the scale Noticing. Conclusion. HSR, SFD and MDD patients do not differ from HC in the awareness of noticing of interoceptive signal processing, whereas cognitive facets of interoception, such as distraction or self-regulation are differentially affected. This highlights the necessity of including specifically targeted interventions, which improve interoceptive awareness, in the prevention and treatment of SFDs.

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See detailHerzschlag-evozierte Potenziale bei Bulimia nervosa
Lutz, Annika; Van Dyck, Zoé; Schulz, André; Vögele, Claus

Poster (2019)

Die ursprüngliche Annahme, dass Essstörungspatient/innen unter einem umfassenden Defizit der interozeptiven Wahrnehmung leiden, wird inzwischen differenzierter betrachtet. Unterschiedliche Befunde ergeben sich je nach betrachtetem Organsystem (Herz, Magen), Verarbeitungsebene (neuronal, Selbstbericht) und Diagnose. Die bisherige Befundlage ist jedoch unübersichtlich und widersprüchlich. Für Bulimia nervosa (BN) wurde sowohl reduzierte, als auch unveränderte Herzschlagwahrnehmung berichtet. Mit dem vorliegenden Beitrag steuern wir weitere Ergebnisse zur Herzschlagwahrnehmung bei und ergänzen diese um einen physiologischen Indikator der kortikalen Verarbeitung kardio-afferenter Signale (Herzschlag-evozierte Potenziale, HEPs). Es wurden 22 Frauen mit akuter oder teilremittierter BN (BMI 23,94±3,61; Alter 31,86±11,20) und 22 gesunde Frauen untersucht (BMI 24,24±3,37; Alter 31,00±10,15). Die Stichproben wurden nach Alter und BMI parallelisiert. Die Teilnehmerinnen führten eine Herzschlagwahrnehmungsaufgabe nach Schandry durch, während ein 64-Kanal-EEG aufgezeichnet wurde. HEPs wurden als mittlere EEG-Amplitude von 455ms bis 595ms nach der R-Zacke berechnet. Die Ergebnisse zeigen keine signifikanten Gruppenunterschiede in Herzschlagwahrnehmung, HEPs und Herzrate. Dies bestätigt vorherige Befunde einer intakten Herzschlagwahrnehmung bei BN. Zusätzlich können wir von einer intakten kortikalen Verarbeitung kardio-afferenter Reize ausgehen. Die Wahrnehmung des Herzschlags ist insbesondere für die Verarbeitung und Regulation von Emotionen relevant. Auf Basis der vorliegenden und früheren Befunde ist davon auszugehen, dass defizitäre Emotionsregulation bei BN nicht auf veränderte Herzschlagwahrnehmung zurückzuführen ist.

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See detailInteroception in Bulimia Nervosa: Evidence at cortical and self-report levels
Lutz, Annika; Van Dyck, Zoé; Schulz, André; Vögele, Claus

in Psychophysiology (2019), 56(S1), 117

Bulimia nervosa (BN) is characterized by recurrent episodes of binge eating and compensatory behaviors, such as self- induced vomiting. Body image disturbance is also prominent in BN. Current research is trying to determine which dimensions and sensory domains of body perception are affected in BN. Regarding heartbeat perception, findings are inconclusive, with some studies reporting reduced and others reporting unaltered interoceptive accuracy in BN. The current study contributes further data on heartbeat perception by using an indicator of the cortical processing of cardio- afferent signals (heartbeat evoked potentials, HEPs). We investigated 22 women with current or partially remitted BN (BMI 23.94[3.61]; age 31.86[11.20]) and 22 healthy women (HC; BMI 24.24[3.37]; age 31.00[10.15]). Participants performed a heartbeat perception task (according to Schandry) with concurrent 64- channel- EEG and ECG recording. HEPs were calculated as mean EEG amplitudes in the interval 455- 595ms after the R- peak of the ECG. Results show no significant differences between the BN and HC groups, neither for heartbeat perception, HEPs, or mean heartrate. These results confirm previous findings of intact heartbeat perception in BN. In addition, cortical processing of cardio- afferent signals is unaltered. Heartbeat perception is particularly relevant for emotion processing and regulation. The previously reported emotion- regulation deficits in BN appear not to be based on altered CNS processing of cardiac signals

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See detailHerzschlag-evozierte Potenziale bei Bulimia nervosa
Lutz, Annika; Van Dyck, Zoé; Schulz, André; Vögele, Claus

in Kirschbaum, C. (Ed.) 45. Jahrestagung Psychologie und Gehirn - Abstractband (2019)

Die ursprüngliche Annahme, dass Essstörungspatient/innen unter einem umfassenden Defizit der interozeptiven Wahrnehmung leiden, wird inzwischen differenzierter betrachtet. Unterschiedliche Befunde ergeben sich je nach betrachtetem Organsystem (Herz, Magen), Verarbeitungsebene (neuronal, Selbstbericht) und Diagnose. Die bisherige Befundlage ist jedoch unübersichtlich und widersprüchlich. Für Bulimia nervosa (BN) wurde sowohl reduzierte, als auch unveränderte Herzschlagwahrnehmung berichtet. Mit dem vorliegenden Beitrag steuern wir weitere Ergebnisse zur Herzschlagwahr nehmung bei und ergänzen diese um einen physiologischen Indikator der kortikalen Verarbeitung kardio-afferenter Signale (Herzschlag-evozierte Potenziale, HEPs). Es wurden 22 Frauen mit akuter oder teilremittierter BN (BMI 23,94±3,61; Alter 31,86±11,20) und 22 gesunde Frauen untersucht (BMI 24,24±3,37; Alter 31,00±10,15). Die Stichproben wurden nach Alter und BMI parallelisiert. Die Teilnehmerinnen führten eine Herzschlagwahrnehmungsaufgabe nach Schandry durch, während ein 64-Kanal-EEG aufgezeichnet wurde. HEPs wurden als mittlere EEG-Amplitude von 455ms bis 595ms nach der R-Zacke berechnet. Die Ergebnisse zeigen keine signifikanten Gruppenunterschiede in Herzschlagwahrnehmung, HEPs und Herzrate. Dies bestätigt vorherige Befunde einer intakten Herzschlagwahrnehmung bei BN. Zusätzlich können wir von einer intakten kortikalen Verarbeitung kardio-afferenter Reize ausgehen. Die Wahrnehmung des Herzschlags ist insbesondere für die Verarbeitung und Regulation von Emotionen relevant. Auf Basis der vorliegenden und früheren Befunde ist davon auszugehen, dass defizitäre Emotionsregulation bei BN nicht auf veränderte Herzschlagwahrnehmung zurückzuführen ist.

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See detailEnhanced Cortical Processing of Cardio-Afferent Signals in Anorexia Nervosa
Lutz, Annika; Schulz, André; Voderholzer, U.; Koch, S.; Van Dyck, Zoé; Vögele, Claus

in Clinical Neurophysiology (2019), 130(9), 1620-1627

Objective: To assess cardiac interoception in anorexia nervosa (AN) using a multidimensional approach. Methods: We assessed the physiological dimensions of cardioception, i.e. the peripheral signal itself (heart rate, HR, and heart rate variability, HRV) and its cortical representation (heartbeat evoked potentials, HEPs), and the psychological dimensions of interoceptive accuracy (heartbeat perception) and interoceptive sensibility (confidence ratings). Electroencephalogram (EEG) and electrocardiogram (ECG) were recorded concurrently during rest and while performing a heartbeat perception task in a sample of 19 female in-patients with AN (DSM-5) and 19 healthy control women (HC). Results: HEPs, defined as mean EEG amplitude in a time window of 455-595 ms after the Rpeak of the ECG, were significantly larger in the AN than in the HC group across conditions (p = .002, d = 1.06). There was a trend toward better heartbeat perception in AN, but no group differences in HR, HRV, and confidence ratings. Conclusions: Individuals with AN showed an interoceptive profile of heightened cortical processing, a trend toward heightened interoceptive accuracy, and unaltered cardiac autonomic activation and interoceptive sensibility. Significance: In terms of neurobiological models of AN, enhanced cortical representations of interoceptive signals might reflect a mechanism, which promotes fasting by alleviating negative body states.

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See detailErhöhte Reaktivität Herzschlag-evozierter Potenziale während der Aufmerksamkeits- fokussierung auf den eigenen Herzschlag und erhöhte kardiovaskuläre Aktivität bei Personen mit hoher somatoformer Symptombelastung
Schulz, André; Rost, S.; Dierolf, Angelika; Lutz, Annika; Flasinski, T.; Münch, E. E.; Witthöft, M.; Vögele, Claus

in Kirschbaum, C. (Ed.) 45. Jahrestagung Psychologie und Gehirn - Abstractband (2019)

Die psychobiologischen Mechanismen der Entstehung körperlicher Symptome bei somatoformen Störungen sind weitgehend unklar. Im Perception-Filter-Modell wird postuliert, dass (1.) verstärkte Signalübermittlung von Körperorganen und (2.) verringerte Filterfunktion im ZNS zu (3.) verstärkter Wahrnehmung von Symptomen führt. Bislang existiert jedoch keine Evidenz, die diesen Zusammenhang an einer von somatoformen Symptomen belasteten Population unterstützt. Um diesen Sachverhalt aufzudecken, wurden zunächst 486 Personen aus der Allgemeinbevölkerung anhand einer Online- Version des Screenings für Somatoforme Störungen (SOMS-2) anhand des oberen und unteren Centils in Personen mit hoher (HSB) und niedriger somatoformer Symptombelastung (NSB) geteilt. Jeweils 29 NSB- (21 Frauen; 26,0 J.) und HSBPersonen (27 Frauen; 28,4 J.) wurden im Labor anhand (1.) verstärkter Körpersignale hinsichtlich kardiovaskulärer Aktivität und Cortisol-Aufwachreaktion, sowie (2.) Filterfunktionen im ZNS hinsichtlich Herzschlag-evozierter Potentiale (HEPs) während der Durchführung eines Herzschlagwahrnehmungstests und während Ruhe untersucht. HEPs reflektieren die Repräsentation kardio-afferenter Signale im ZNS. Die HSB-Gruppe zeigte eine höhere Ruhe-Herzrate (72,7 vs. 66,8 bpm) und eine geringere Herzratenvariabilität (RMSSD: 36,8 vs. 52,5 ms) als die LSB-Gruppe. Außerdem zeigten die HSB-Personen bei der Aufmerksamkeitsfokussierung auf den eigenen Herzschlag eine höhere Reaktivität der HEP-Amplitude als die LSB-Personen. Es gab keine Gruppenunterschiede hinsichtlich der Cortisol-Aufwachreaktion. Die Ergebnisse belegen sowohl (1.) die verstärkte Signalübermittlung von Körperorganen, als auch (2.) verringerte Filterfunktionen bei Personen mit hoher somatoformer Symptombelastung. Dies spricht für die Gültigkeit des Perception-Filter-Modells. Die erhöhte HEP-Reaktivität bezüglich der Aufmerksamkeitsfokussierung auf Körperprozesse könnte einen Biomarker für Personen mit hohem Risiko für die Entwicklung von somatoformen Störungen darstellen.

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See detailMood, emotions and eating disorders
Vögele, Claus; Lutz, Annika; Gibson, E. Leigh

in Agras, W. Stewart; Robinson, Athena (Eds.) The Oxford Handbook of Eating Disorders, Second Edition (2018)

Mood and emotions are intrinsically involved with eating. This chapter discusses basic mechanisms, findings, and models that help our understanding of the interactions between eating and emotions, in both clinical and nonclinical populations. The finding that negative affect predicts EDs transdiagnostically, and that comorbidity with depressive disorders and anxiety disorders is the norm among patients with EDs suggests that EDs may not necessarily be restricted to domains of eating behavior and body image but may also be associated with significant difficulties in affective functioning. This chapter reviews the evidence relating to the notion that EDs are disturbances of mood regulation, in which regulatory strategies specifically related to eating and the body are used to diminish negative affect associated with food, body image, or stress.

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See detailKardiale Modulation der Schreckreaktion bei hoher gegenüber niedriger Symptombelastung: afferente Signalübermittlung auf der Hirn-Körper-Achse beein usst frühe Stimulus-Verarbeitung bei hoher Symptombelastung
Dierolf, Angelika; Rost, Silke; Lutz, Annika; Flasinski, Tabea; Münch, Eva Elisabeth; Vögele, Claus; Witthöft, Michael; Schulz, André

in Hennig, J.; Stark, R. (Eds.) Abstractband Psychologie und Gehirn 2018 (2018)

Somatische Belastungsstörungen (SBS) sind oftmals durch andauernde medizinisch- unerklärte Symptome gekennzeichnet, deren Entstehung größtenteils ungeklärt ist. Diese Studie hatte zum Ziel, die empirisch bislang unbeantwortete Frage zu klären, ob Symptomentstehung auf veränderte Signalübermittlung auf der Hirn-Körper-Achse zurückzuführen ist. Zunächst wurden 486 Personen aus der Allgemeinbevölkerung anhand des SOMS-2 in Personen mit hoher Symptombelastung (HSB; unterstes Perzentil) und niedriger Symptombelastung (NSB; oberstes Perzentil) unterteilt. Personen mit HSB stellen eine besondere Risikogruppe für SBS dar. 28 HSB- und 31 NSB-Personen durchliefen ein Paradigma der kardialen Modulation der Schreckreaktion (CMS), ein Verfahren, das kardio-afferente Signalübermittlung prä-attentiv abbilden kann. Ihnen wurden je zehn akustische Schreckreize (105 dB) in sechs Zeitpunkten nach der kardialen R-Zacke (0, 100, 200, 300, 400, 500 ms) präsentiert. Als Indikator für die Schreckreaktion wurden die N1- und P2-Amplitude der auditorisch-evozierten Potenziale über Cz gemessen, da der Effekt der Hirn-Körper-Signalübermittlung im Kortex abgebildet werden sollte. Es zeigten sich geringere N1-Amplituden auf die Schreckreize, die während der systolischen Phase (200, 300 ms) im Vergleich zur diastolischen Phase (0 ms) präsentiert wurden (p=.0002), was für das Vorliegen eines CMS-Effekts spricht. Die HSB-Gruppe zeigte höhere P2-Amplituden als die NSB-Gruppe. Es zeigte sich außerdem, dass der CMS-Effekt bezüglich der N1-Komponente in der HSB-Gruppe geringer ist (p=.035), jedoch bezüglich der P2-Komponente stärker ist als in der NSB-Gruppe (p=.031). Afferente Signalübermittlung auf der Hirn-Körper-Achse könnte bei Personen mit HSB bereits frühe, automatischeWahrnehmungsprozesse verändern, die durch späte, aufmerksamkeits-gesteuerte Prozesse kompensiert werden. Diese prä-attentive Beeinflussung der Stimulus-Verarbeitung könnte ein Mechanismus der Symptomentstehung bei Personen mit HSB und SBS sein.

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See detailSensing Your Body: Interoceptive Awareness and Medically Unexplained Symptoms
Flasinski, Tabea; Dierolf, Angelika; Voderholzer, Ulrich; Koch, Stefan; Bach, Michael; Asenstorfer, Carina; Lutz, Annika; Rost, Silke; Vögele, Claus; Schulz, André

in Abtracts of the 32nd Annual Conference of the European Health Psychology Society (2018)

According to contemporary theories of medically unexplained symptoms (MUS), alterations in interoception play a major role in symptom development and maintenance. Nevertheless, the mechanisms underlying this relationship remains unclear. To address this unresolved issue, we investigated whether individuals with varying degrees of MUS differ in different facets of interoceptive awareness as assessed with the Multidimensional Assessment of Interoceptive Awareness (MAIA) questionnaire. In study 1, 486 individuals were screened with an online version of the Screening for Somatoform Disorders (SOMS-2). Individuals with a SOMS index below 5 (low reporter, n=32) and above 20 (high reporter, n=32) were invited to fill in the MAIA. High symptom reporter had lower scores on the Not-Distracting, Not-Worrying, and Trusting subscales, and higher scores on the Emotional Awareness subscale (Cohen´s d=.70–1.16). In study 2, individuals with DSM-IV somatoform disorder (SFD; n=25) were compared to individuals with major depressive disorder (MDD; n=24) and healthy controls (HC; n=25). The SFD and MDD groups had lower scores on the Not-Distracting, Attention Regulation, Self-Regulation, and Trusting subscales than HC. The MDD group had lower scores than the SFD and HC groups on the Body Listening subscale (partial eta-squared=.18-.26). No differences with regard to Noticing of bodily sensations were found. Groups with subclinical SFD, SFD and MDD do not differ from healthy individuals in terms of actual body perception, whereas cognitive facets of interoception, such as distraction or self-regulation are differentially affected. This highlights the necessity of including specifically targeted mindfulness-based interventions

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See detailImpaired filter function in patients with somatoform disorders and major depression, as reflected by auditory evoked potentials in an oddball and an active distraction paradigm
Hutmacher, Djenna; Dierolf, Angelika; Lutz, Annika; Vögele, Claus; Voderholzer, Ulrich; Koch, Stefan; Bach, Michael; Asenstorfer, Carina; Mertens, Vera-Christina; Schulz, André

in Abstractband Psychologie und Gehirn 2018 (2018)

Introduction: In the in influential perception-filter model of somatoform disorders (SD), three stages of symptom perception are postulated: (1) bodily signals, which may be amplified by stress, (2) a filter system, which distinguishes between relevant and irrelevant stimuli, and (3) cortical perception of physical symptoms. As there is dearth of evidence so far supporting the relationship between (1) bodily signals and (2) filter processes in SD, this study investigated if filter processes are altered in SD and if stress may affect filter mechanisms. Methods: Twenty-four patients with SD, 24 with depression and 24 healthy control individuals were assessed. Event-related potentials (ERPs) with two different auditory distraction procedures were recorded over four blocks, one before and three after either a socially evaluated cold pressor test (SECPT) or a control procedure. We manipulated both the frequency of and the attentional focus on stimuli to reflect filter processes. Results: We found smaller P3b amplitudes (reflecting memory storage) in patients with depression and SD, as compared to healthy controls. Furthermore, both patient groups showed a smaller P3a amplitude (reflecting attention), when counting the infrequent tone ("Oddball task") and a smaller N1 amplitude when counting the frequent tone ("active distraction"). In patients with SD, the SECPT had a decreasing effect on P3a amplitudes. Conclusions: Both late filter processes, reflecting attention (P3a) and memory storage (P3b), may be impaired in SD and depression. As acute stress affected attention in SD patients only, the impact of bodily signals (1) on filter processes (2) may be specific for SD.

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See detailEntwicklung und Validierung eines Fragebogens zur multidimensionalen Erfassung essstörungsspezifischer interozeptiver Körperwahrnehmung: Vorläufige Daten anhand einer gesunden und einer essgestörten Stichprobe
Van Dyck, Zoé; Lutz, Annika; Ortmann, Julie; Schulz, André; Vögele, Claus

in Schorr, A. (Ed.) Abstractband 13. Kongress der Fachgruppe Gesundheitspsychologie der DGPs (2017)

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See detailGastric modulation of startle eye blink
Schulz, André; Van Dyck; Lutz, Annika; Rost, Silke; Vögele, Claus

in Biological Psychology (2017), 127(1), 25-33

Abstract: Previous assessment methods of gastric interoception either rely on self-reports, or imply invasive procedures. We investigated the reliability of startle methodology as a non-invasive alternative for the assessment of afferent gastric signals. Twenty-four participants were tested on three separate days, on which they were requested to ingest water (either 0, 300 or 600 ml), after 8 h of fasting. On each assessment day, eye blink responses (EMG) to 10 acoustic startle stimuli (105 dB) were assessed at 4 measurement points (before, 0, 7, 14 min. after ingestion). Increased normogastric responses (EGG), ratings of satiety and fullness, and higher heart rate variability (RMSSD) suggested effective non-invasive induction of gastric distention. Startle responses were lower directly after ingestion of 600 ml as compared to earlier and later measurements. These results suggest that startle methodology provides a reliable method to investigate afferent gastric signals. It could be useful to study possible dissociations between subjective reports and objective afferent gastric signals in eating or somatoform disorders.

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See detailAffective evaluation of body images in anorexia nervosa
Lutz, Annika; Herbert, Cornelia; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

in Psychophysiology (2017), 54(S1),

Anorexia nervosa is characterized by fear of weight gain. This is reflected in amygdala activation during confrontation with distorted photographs of oneself simulating weight gain. In contrast, photographs of emaciated women induce startle attenuation, suggesting a positive valuation of extreme slimness. To combine these findings, we applied an affective startle modulation paradigm containing photos of the participants simulating weight gain and photos simulating weight loss. We assessed eye-blink startle responses via EMG in 20 women with anorexia nervosa (AN; mean age = 25 years; mean BMI = 23) and 20 healthy control women (HC; mean age = 25 years; mean BMI = 23). We were able to replicate affective startle modulation of standard positive, negative, and neutral pictures, except for an absence of startle attenuation for positive pictures in AN. Body images did not modulate the startle response in either group. This was in contrast to the subjective ratings, in which the AN group indicated negative valence and high arousal for distorted body images. The body photographs used in our study emphasized general body shape and it appears that this was not threatening to AN patients. Photos highlighting body details might produce different results. Considering that body image exposure, a frequently used intervention tool for AN, aims at fear reduction through habituation, it is essential to determine which aspects of the body actually elicit fear responses to maximize therapy outcome.

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See detailThe Water Load Test As a Measure of Gastric Interoception: Development of a Two-Stage Protocol and Application to a Healthy Female Population
Van Dyck, Zoé; Vögele, Claus; Blechert, Jens; Lutz, Annika; Schulz, André; Herbert, Beate M.

in PLoS ONE (2016), 11(9), 0163574

The sensitivity for one’s own internal body signals (i.e., interoception) has been demonstrated to play an important role in the pathogenesis of eating and weight disorders. Most previous measures assessing interoceptive processing have not, or only partly, captured perception of hunger and satiety cues, which is a core aspect of interoceptive deficits in eating disorders. In addition, methods used to measure sensitivity to gastric signals are heterogeneous and findings inconsistent. The primary aim of the present study was to establish a standardised test to measure gastric interoception, and to provide normative data using a non-clinical adult sample. The two-step Water Load Test (WLT-II) involves ingestion of non-caloric water until perceived satiation (step 1) and until maximum fullness (step 2). The WLT-II consists of several variables: Besides volumes of water ingested until satiation and maximum fullness expressed in ml, percentage of satiation to maximum fullness is calculated as an individual index of gastric interoception that is not confounded with stomach capacity. Ninety-nine healthy women participated in the study. Measures included the WLT-II, the heartbeat tracking test, a self-report questionnaire assessing subjective sensations, and the Eating Disorder Inventory-2. Twenty-eight participants underwent test-retest of the WLT-II. Results suggest that the WLT-II is a valid and reliable measure of gastric interoception. Importantly, satiation volume and percentage of satiation to maximum fullness were strongly positively related to self-reported bulimic symptoms, indicating that the WLT-II could emerge as a useful clinical tool to measure interoceptive processing in the field of eating disorders.

See detailInterozeption bei Anorexia nervosa: Befunde auf subjektiver und elektrophysiologischer Ebene
Lutz, Annika; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

Scientific Conference (2016, September)

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See detailInterozeption bei Anorexia nervosa: Befunde auf subjektiver und elektrophysiologischer Ebene
Lutz, Annika; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

in 15. Kongress der Deutschen Gesellschaft für Verhaltensmedizin und Verhaltensmodifikation. Verhaltensmedizin 2.0 - von eHealth zu mHealth. 25. bis 27. Februar 2016, Johannes Gutenberg-Universität Mainz. Abstractband (2016, February)

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See detailInteroception in anorexia nervosa: evidence at cortical and self-report levels
Lutz, Annika; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

in Appetite (2016), 107

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See detailGastrische Modulation der Schreckreaktion und gastrisch-evozierte Potenziale: zwei neue psychophysiologische Indikatoren für Interozeption des gastrointestinalen Systems
Schulz, André; Schaan, L.; Van Dyck, Zoé; Lutz, Annika; Trojan, J.; Vögele, Claus

in Kathmann, N. (Ed.) 42. Tagung Psychologie und Gehirn Abstractband (2016)

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See detailReduced early visual processing of own body images in anorexia nervosa: An event-related potentials study
Lutz, Annika; Herbert, Cornelia; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

Poster (2016)

Introduction. Although body image distortion in anorexia nervosa (AN) has been extensively studied over the past decades, its underlying mechanisms are not yet fully understood. Neuro-imaging studies have identified functional and structural alterations in brain areas involved in visual body perception, but the time course of visual body processing in AN remains mostly unexplored. The current study used event-related brain potentials (ERPs) to investigate single processing steps along the time course, particularly the visual processing of physical body image characteristics (featural processing, P1) and the recognition of a body as such (configural processing, N1). Methods. Twenty in-patients with AN, and 20 healthy women viewed photographs of themselves, of another woman’s body and of their own and another woman’s standardized object (cup) with concurrent EEG recording. Results. Body images elicited an accentuation of the P1 component (105-160 ms), which was absent for the comparison between own-body and own-cup images in the AN group. Results regarding the N1 component suggest alterations in object processing in AN. Conclusions. Our results demonstrate that individuals with AN show reduced featural processing of their own body image, a process which, due to its position early in the visual processing stream, is unlikely to involve higher cognitive stimulus processing. This suggests a possible role of previously undetected pre-conscious mechanisms in body image disturbance.

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See detailZentralnervöse Verarbeitung von Körpersignalen bei Anorexia nervosa
Lutz, Annika; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

Scientific Conference (2015, April)

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See detailBody perception and evaluation in anorexia nervosa
Lutz, Annika

Doctoral thesis (2015)

Body image disturbance is a prominent feature in anorexia nervosa (AN) and encompasses alterations across the different dimensions of body image, that is, perception, affect, cognition, and behaviour. There is a wealth of research regarding the subjective experience of body image disturbance and evidence for underlying neuronal alterations is beginning to emerge. The present project was designed to assess basic processes underlying body image disturbance with the help of psychophysiological measurement techniques and self-other discrimination tasks. In study 1, using a self-other discrimination task with distorted body images, we were able to demonstrate interactions between perceptual factors and cognitive bias which may sustain a distorted and negative body image in healthy women. Study 2 showed a discrepancy between explicit negative ratings for body shapes and implicit neutral affect towards the same images, as assessed with an affective startle-modulation paradigm, in healthy women and women with AN. These results suggest that automatic fear responses to fat-distorted self-body pictures, as well as implicit approach motivation towards thin body images, as reported in previous studies, are not present in all patients with AN. In study 3 a differential alteration of featural and configural visual processing of body images was detected in an event-related brain potentials (EEG-ERP) paradigm. Individuals with AN showed a lack of discrimination between self-body and self-object pictures between 105 and 160 ms after stimulus onset (P1 component, featural processing) and an enhanced processing of body relative to neutral object pictures between 160 and 225 ms after stimulus onset (N1 component, configural processing). This suggests alterations in the basic visual processing of body shapes in AN, which might be related to influences of top-down attentional modulation. Study 4 showed enhanced processing of cardiac visceral signals in the central nervous system (CNS) in individuals with AN, which might either be a marker of psychopathology, in particular anxiety, or an indication of clinical improvement. In summary, the present results do not support the view of a global perceptual deficit in AN, but demonstrate the complexity of body image alterations in AN. It appears mandatory to further investigate basic processes underlying body image disturbances in AN and in healthy women to arrive at a comprehensive understanding of their nature and to provide a theoretical basis for body image interventions. The importance of using specific assessment methods, such as indicators of body-related processing in the CNS, is highlighted.

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See detailGastrische Modulation der Schreckreaktion: eine prä-attentive Methode zur Abbildung afferenter Signale aus dem gastrointestinalen System
Schulz, André; Van Dyck, Zoé; Lutz, Annika; Vögele, Claus

in Kaiser, J.; Fiebach, C. (Eds.) 41. Tagung Psychologie und Gehirn - Abstracts der Beiträge (2015)

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See detailZentralnervöse Verarbeitung von Körpersignalen bei Anorexia nervosa
Lutz, Annika; Schulz, André; Voderholzer, U.; Koch, S.; Vögele, Claus

in Kaiser, J.; Fiebach, C. (Eds.) 41. Tagung Psychologie und Gehirn - Abstracts der Beiträge (2015)

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See detailInteroception in anorexia nervosa: evidence at cortical and self-report levels
Lutz, Annika; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

in 45th Annual Congress of the European Association for Behavioural and Cognitive Therapies (EABCT) (2015)

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See detailGastrisch-evozierte Potenziale: ein neurophysiologischer Indikator für die kortikale Repräsentation afferenter Signale aus dem gastrointestinalen System
Schaan, L.; Van Dyck, Zoé; Lutz, Annika; Trojan, J.; Vögele, Claus; Schulz, André

in Kaiser, J.; Fiebach, C. (Eds.) 41. Tagung Psychologie und Gehirn - Abstracts der Beiträge (2015)

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See detailAffektive Bewertung von Körperbildern bei Anorexia nervosa
Lutz, Annika; Herbert, C.; Schulz, André; Voderholzer, U.; Koch, S.; Vögele, Claus

in Wittchen, H.-U.; Härtling, S.; Hoyer, J. (Eds.) Abstractband - Wieviel Psychologie steckt in der Psychotherapie? (2015)

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See detailBody or cup? Alterations in featural and configural body image processing in anorexia nervosa
Lutz, Annika; Herbert, Cornelia; Schulz, André; Voderholzer, Ulrich; Koch, Stefan; Vögele, Claus

in Psychophysiology (2015), 52(supplement 1), 123

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See detailShort-term food deprivation increases amplitudes of heartbeat-evoked potentials
Schulz, André; Ferreira de Sá, D. S.; Dierolf, Angelika; Lutz, Annika; Van Dyck, Zoé; Vögele, Claus; Schächinger, H.

in Psychophysiology (2015), 52(5), 695-703

Nutritional state, i.e. fasting or non-fasting, may affect the processing of interoceptive signals, but mechanisms underlying this effect remain unclear. We investigated 16 healthy women on two separate days: when satiated (standardized food intake) and after an 18 h food deprivation period. On both days, heartbeat-evoked potentials (HEPs) and cardiac and ANS activation indices (heart rate, nLF HRV) were assessed. The HEP is an EEG pattern that is considered an index of cortical representation of afferent cardiovascular signals. Average HEP activity (R-wave +455-595 ms) was enhanced during food deprivation compared to normal food intake. Cardiac activation did not differ between nutritional conditions. Our results indicate that short-term food deprivation amplifies an electrophysiological correlate of the cortical representation of visceral-afferent signals originating from the cardiovascular system. This effect could not be attributed to increased cardiac activation, as estimated by heart rate and nLF HRV, after food deprivation.

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See detailFood-cue affected motor response inhibition and self-reported dieting success: a pictorial affective shifting task
Meule, Adrian; Lutz, Annika; Krawietz, Vera; Stützer, Judith; Vögele, Claus; Kübler, Andrea

in Frontiers in Psychology (2014), 5(216),

Behavioral inhibition is one of the basic facets of executive functioning and is closely related to self-regulation. Impulsive reactions, i.e. low inhibitory control, have been associated with higher body-mass-index (BMI), binge eating, and other problem behaviors (e.g. substance abuse, pathological gambling, etc.). Nevertheless, studies which investigated the direct influence of food-cues on behavioral inhibition have been fairly inconsistent. In the current studies, we investigated food-cue affected behavioral inhibition in young women. For this purpose, we used a go/no-go task with pictorial food and neutral stimuli in which stimulus-response mapping is reversed after every other block (affective shifting task). In study 1, hungry participants showed faster reaction times to and omitted fewer food than neutral targets. Low dieting success and higher BMI were associated with behavioral disinhibition in food relative to neutral blocks. In study 2, both hungry and satiated individuals were investigated. Satiation did not influence overall task performance, but modulated associations of task performance with dieting success and self-reported impulsivity. When satiated, increased food craving during the task was associated with low dieting success, possibly indicating a preload-disinhibition effect following food intake. Food-cues elicited automatic action and approach tendencies regardless of dieting success, self-reported impulsivity, or current hunger levels. Yet, associations between dieting success, impulsivity, and behavioral food-cue responses were modulated by hunger and satiation. Future research investigating clinical samples and including other salient non-food stimuli as control category is warranted.

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See detailImpulsive reactions to food-cues predict subsequent food craving
Meule, Adrian; Lutz, Annika; Vögele, Claus; Kübler, Andrea

in Eating Behaviors (2014), 15

Low inhibitory control has been associated with overeating and addictive behaviors. Inhibitory control can modulate cue-elicited craving in social or alcohol-dependent drinkers, and trait impulsivity may also play a role in food-cue reactivity. The current study investigated food-cue affected response inhibition and its relationship to food craving using a stop-signal task with pictures of food and neutral stimuli. Participants responded slower to food pictures as compared to neutral pictures. Reaction times in response to food pictures positively predicted scores on the Food Cravings Questionnaire – State (FCQ-S) after the task and particularly scores on its hunger subscale. Lower inhibitory performance in response to food pictures predicted higher FCQ-S scores and particularly those related to a desire for food and lack of control over consumption. Task performance was unrelated to current dieting or other measures of habitual eating behaviors. Results support models on interactive effects of top-down inhibitory control processes and bottom-up hedonic signals in the self-regulation of eating behavior, such that low inhibitory control specifically in response to appetitive stimuli is associated with increased craving, which may ultimately result in overeating.

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See detailResisting high calorie foods: Heart rate variability as an indicator of self-regulatory processes in restrained eating behaviour
Lutz, Annika; Van Dyck, Zoé; Vögele, Claus

in André, C; Bohn, T; Evers, D; Hoffmann, L; Soukoulis, C (Eds.) Nutrition, chronic health complications, and healthy ageing (2013, October 25)

INTRODUCTION. In our affluent western society many people, especially young women, try to restrict their food intake in order to conform to the society’s thin ideal in spite of the omnipresence of high-calorie foods. However, this dieting behaviour is often linked to eating binges, leads to weight gain in the long run, and is the best established risk factor for eating disorders. Therefore, it is of great importance to study the factors associated with successful vs. unsuccessful control of eating behaviour. Restrained eaters are people who habitually try to resist high calorie foods in order to restrict their food intake and have been shown to be prone to a breakdown of self-regulation. Heart rate variability (HRV) is a psychophysiological measure calculated from heart rate. It serves as an indicator of self-regulatory capacity and effort because of neural linkages between heart and brain. Resisting high calorie foods is associated with an increase of state-HRV and temporarily depletes self-regulatory resources, a mechanism which could explain breakdowns in self-regulation of food intake. Therefore, the current study investigated the changes in HRV during confrontation with high vs. low calorie foods in restrained and unrestrained eaters. METHOD. After a three hour-fast, 60 female university students were exposed to either high (brownie) or low calorie food (carrot). They were asked to look at the food and smell it, but to refrain from eating it. Heart rate was continuously recorded during exposure, as well as during rest before and after exposure. Restrained eating was assessed with the Dutch Eating Behavior Questionnaire. RESULTS. HRV increased during exposure. This increase was characterised by an interaction of exposure condition and restrained eating. In the high-calorie condition, HRV increase was related to restrained eating. The higher the restrained eating scores, the stronger was the increase in HRV. In the low-calorie condition there was no significant association between HRV and restrained eating. DISCUSSION. The results suggest increased self-regulatory effort in highly restrained eaters when exposed to high calorie foods. In addition, restrained eaters seem to have spared their self-regulatory resources when exposed to diet-congruent low calorie food. These findings provide first insights into dietary strategies at a basic self-regulation level, using psychophysiological methods. In the long run, a detailed understanding of basic self-regulatory mechanisms in dietary restriction will help to develop strategies for healthy eating behaviour in normal-weight and over-weight populations.

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See detailHeart rate variability as an indicator of self-regulatory processes in restrained eating behaviour
Lutz, Annika; Van Dyck, Zoé; Vögele, Claus

in Psychophysiology (2013, September), 50(S1), 81

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See detailRestrained eating predicts increased autonomic reactivity during food exposure in young women
Van Dyck, Zoé; Lutz, Annika; Vögele, Claus

in Psychology & Health (2013, August 02), 28

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See detailHerzratenvariabilität als Indikator für Selbstregulationsprozesse bei gezügeltem Essverhalten
Lutz, Annika; Van Dyck, Zoé; Vögele, Claus

in 11. Kongress der Fachgruppe Gesundheitspsychologie: Selbstregulation und Gesundheit: Abstractband des Kongresses (2013)

EINFÜHRUNG. Gezügelte Esser unterwerfen ihr Essverhalten einer ausgeprägten kognitiven Kontrolle. Sie versuchen andauernd, hochkalorische Nahrungsmittel zu vermeiden und diesen zu widerstehen. Dabei sind sie jedoch sehr anfällig für ein kurzfristiges Versagen der Selbstregulation. Herzratenvariabilität (HRV) ist ein Indikator für Selbstregulationskapazität und -anstrengung. Sie steigt während des Versuchs, einem hochkalorischen Nahrungsmittel zu widerstehen, kurzfristig an. Im Anschluss an eine solche Anstrengung sind die Selbstregulationsressourcen vorübergehend erschöpft. Auf Grundlage dieser Befunde wurden in der vorliegenden Studie Veränderungen der HRV während der Konfrontation mit hoch- vs. niedrigkalorischen Nahrungsmitteln bei gezügelten und ungezügelten Essern untersucht. METHODIK. Nach dreistündigem Fasten wurden 60 Studentinnen entweder mit einem hochkalorischen (Brownie) oder mit einem niedrigkalorischen (Karotte) Nahrungsmittel konfrontiert. Sie wurden gebeten, das Nahrungsmittel zu betrachten und seinen Geruch wahrzunehmen, es aber nicht zu essen. Währenddessen wurde kontinuierlich die Herzrate aufgezeichnet. Zusätzlich fanden Ruhemessungen vor und nach der Konfrontation statt. Gezügeltes Essverhalten wurde mit dem Dutch Eating Behavior Questionnaire erfasst. ERGEBNISSE. Gezügelte Esser zeigten während der Konfrontation mit hochkalorischen Nahrungsmitteln einen stärkeren Anstieg der HRV als während der Konfrontation mit niedrigkalorischen Nahrungsmitteln. Bei ungezügelten Essern stieg die HRV in beiden Bedingungen gleich stark an. SCHLUSSFOLGERUNGEN. Gezügelte Esser setzen bei der Konfrontation mit hochkalorischen Nahrungsmitteln vermehrt Selbstregulationsressourcen ein, um sich zu kontrollieren. Bei der Konfrontation mit niedrigkalorischen Nahrungsmitteln, die den Erfolg ihrer Diät nicht bedrohen, scheint dies nur in geringem Maß nötig zu sein. Möglicherweise handelt es sich hier um eine Strategie zur Schonung von Selbstregulationsressourcen, um diese effektiver für die Vermeidung hochkalorischer Nahrungsmittel einsetzen zu können. Die Verwendung psychophysiologischer Methoden erweist sich als vielversprechender Ansatz zur Untersuchung grundlegender Selbstregulationsprozesse im Bereich des gezügelten Essverhaltens.

See detailDer Versuchung widerstehen: Konfrontation mit hochkalorischen Nahrungsmitteln verbessert die Inhibitionsfähigkeit gezügelter Esser
Lutz, Annika; Kahlert, Aniko; Van Dyck, Zoé; Vögele, Claus

Poster (2013)

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See detailPsychophysiologische und behaviorale Korrelate unkontrollierten Essens bei gezügelten Essern
Lutz, Annika; Vögele, Claus

Scientific Conference (2012)

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See detailHands-off the cookie-jar: Success and failure in the self-regulation of eating behaviour
Lutz, Annika; Vögele, Claus

in Psychology & Health (2012), 27(sup1), 20-20

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See detailWho’s that girl? Körperbild, Selbsterkennung und Selbstkonzept bei jungen Frauen mit und ohne Essstörungsrisiko
Lutz, Annika; Herbert, Cornelia; Vögele, Claus

in Abstract book of 30. Symposium Klinische Psychologie und Psychotherapie der DGPS Fachgruppe Klinische Psychologie und Psychotherapie (2012)

See detailWho’s that girl? Body image, self-recognition, and self-concept in young women with high vs. low risk for eating disorders
Lutz, Annika; Herbert, Cornelia; Vögele, Claus

Scientific Conference (2012)

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See detailSelf-reported dieting success is associated with cardiac autonomic regulation in current dieters
Meule, Adrian; Lutz, Annika; Vögele, Claus; Kübler, Andrea

in Appetite (2012), 59(2)

Restrained eating, eating disorders and obesity have been associated with cardiac autonomic dysregulation. The current study investigated cardiac autonomic regulation in current dieters. Female students (N = 50) indicated if they were currently trying to control their weight and completed the Perceived Self-Regulatory Success in Dieting Scale (PSRS). Heart beat intervals were recorded during two 10 min relaxation periods from which parameters of vagal-cardiac control (high frequency power in normalized units, HF n.u.) and sympathovagal balance (ratio of low and high frequency power, LF/HF) were calculated. In current dieters, self-reported dieting success was positively associated with HF and negatively associated with LF/HF. These associations were independent of current body-mass and food deprivation (i.e. hours since the last meal). We conclude that vagal-cardiac control reflects self-regulatory strength, rather than nutritional status, in current dieters.

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See detailWomen with elevated food addiction symptoms show accelerated reactions, but no impaired inhibitory control, in response to pictures of high-calorie food-cues.
Meule, Adrian; Lutz, Annika; Vögele, Claus; Kübler, Andrea

in Eating Behaviors (2012), 13(4), 423-428

Addictive behaviors are accompanied by a lack of inhibitory control, specifically when individuals are confronted with substance-related cues. Thus, we expected women with symptoms of food addiction to be impaired in inhibitory control, when confronted with palatable, high-calorie food-cues. Female college students (N = 50) where divided in low and high food addiction groups based on the symptom count of the Yale Food Addiction Scale. Participants performed a Go/No-Go-task with high-calorie food-cues or neutral pictures presented behind the targets. Self-reported impulsivity was also assessed. The high food addiction group had faster reaction times in response to food-cues as compared to neutral cues and reported higher attentional impulsivity than the low food addiction group. Commission and omission errors did not differ between groups or picture types. Hence, women with food addiction symptoms reported higher attentional impulsivity and reacted faster in response to food-cues, although neither increased self-reported motor impulsivity nor impaired behavioral inhibition were found. Food addiction symptoms seem to be related to attentional aspects of impulsivity but not other facets of impulsivity.

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See detailFood cravings discriminate differentially between successful and unsuccessful dieters and non-dieters: Validation of the Food Cravings Questionnaires in German
Meule, Adrian; Lutz, Annika; Vögele, Claus; Kübler, Andrea

in Appetite (2012), 1(58), 88-97

Food cravings have been strongly associated with triggering food consumption. However, definitions and measurements of food cravings are heterogeneous. Therefore, Cepeda-Benito and colleagues (2000) have suggested the Food Cravings Questionnaires (FCQs) to measure food cravings as a multidimensional con- struct at trait- and state-level. In the current study, we validated a German version of the FCQs in an online study (N = 616). The factor structure of the state and trait versions could partially be replicated, but yielded fewer than the originally proposed factors. Internal consistencies of both versions were very good (Cronbach’s a > .90), whereas retest reliability of the state version was expectedly lower than that of the trait version. Construct validity of the trait version (FCQ-T) was demonstrated by high correlations with related eating behavior questionnaires and low correlations with questionnaires unrelated to eating. Most importantly, FCQ-T-subscales were able to discriminate between successful and unsuccessful diet- ers and non-dieters. Validity of the state version was supported by positive relations with food depriva- tion and current negative affect. Taken together, the German version of the FCQs has good psychometric properties. Moreover, this study provided first evidence that distinct dimensions of food cravings are differentially related to success and failure in dieting.

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See detailThe allure of the cream gateau: Attentional and response bias towards high calorie foods
Lutz, Annika; Meule, Adrian; Kübler, Andrea; Vögele, Claus

Scientific Conference (2011)

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See detailSelbstregulation und Inhibition von „Food Cravings“
Lutz, Annika; Meule, Adrian; Kübler, Andrea; Vögele, Claus

in Vögele, Claus (Ed.) Von der Forschung zur Praxis 13. Kongress der Deutschen Gesellschaft für Verhaltensmedizin und Verhaltensmodifikation – DGVM (2011)