Reference : Interoception in Bulimia Nervosa: Evidence at cortical and self-report levels

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a journal
	Discipline(s) :	Social & behavioral sciences, psychology : Neurosciences & behavior
	To cite this reference:	http://hdl.handle.net/10993/40856

Title :	Interoception in Bulimia Nervosa: Evidence at cortical and self-report levels
Language :	English
Author, co-author :	Lutz, Annika [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
	Van Dyck, Zoé [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
	Schulz, André [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
	Vögele, Claus [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
Publication date :	2019
Journal title :	Psychophysiology
Publisher :	Blackwell
Volume :	56
Issue/season :	S1
Pages :	S117
Peer reviewed :	Yes
ISSN :	0048-5772
e-ISSN :	1469-8986
City :	Oxford
Country :	United Kingdom
Event name :	59th Annual Meeting of the Society for Psychophysiological Research
Event date :	25-09-2019 to 29-09-2019
Event place (city) :	Washington, D.C.
Event country :	DC, USA
Abstract :	[en] 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
Permalink :	http://hdl.handle.net/10993/40856

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