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Impaired 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 et al.
2018In Abstractband Psychologie und Gehirn 2018
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Abstract :
[en] 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.
Disciplines :
Neurosciences & behavior
Author, co-author :
Hutmacher, Djenna ;  University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE)
Dierolf, Angelika ;  University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE)
Lutz, Annika  ;  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)
Voderholzer, Ulrich
Koch, Stefan
Bach, Michael
Asenstorfer, Carina
Mertens, Vera-Christina
Schulz, André  ;  University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE)
External co-authors :
yes
Language :
English
Title :
Impaired filter function in patients with somatoform disorders and major depression, as reflected by auditory evoked potentials in an oddball and an active distraction paradigm
Publication date :
2018
Event name :
44. Tagung "Psychologie und Gehirn" 2018
Event organizer :
DGPA und DGPs Fachgruppe "Biologische Psychologie und Neuropsychologie"
Event place :
Gießen, Germany
Event date :
31-05-2018 to 02-06-2018
Audience :
International
Main work title :
Abstractband Psychologie und Gehirn 2018
Pages :
264
Peer reviewed :
Peer reviewed
Available on ORBilu :
since 31 July 2018

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