Universität zu Köln

Firk, Christine ORCID: 0000-0002-3310-0011, Mainz, Verena, Schulte-Ruether, Martin, Fink, Gereon, Herpertz-Dahlmann, Beate and Konrad, Kerstin ORCID: 0000-0001-9039-2615 (2015). Implicit sequence learning in juvenile anorexia nervosa: neural mechanisms and the impact of starvation. J. Child Psychol. Psychiatry, 56 (11). S. 1168 - 1177. HOBOKEN: WILEY. ISSN 1469-7610

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Abstract

Background: Previous studies have reported that cognitive deficits occur in patients with anorexia nervosa (AN) and that these deficits may represent a predisposition towards developing AN or perpetuate the disorder. Specifically, dysfunctional implicit learning may contribute to the development of highly resistant dieting behaviours that are fundamental to the persistence of the disorder. Thus, the aims of this study were (a) to investigate implicit sequence learning in adolescent patients with AN before and after weight recovery and (b) to elucidate the associated neural mechanisms in acute AN relative to healthy controls. Methods: In a behavioural study, implicit sequence learning was assessed using a serial reaction time task in 27 adolescents with AN before (T1) and after weight recovery (T2) compared with age-matched healthy controls (HC) who were assessed at similar time intervals. The neural correlates of implicit sequence learning were subsequently investigated in 19 AN patients shortly after they were admitted to the hospital and 20 HC using functional magnetic resonance imaging (fMRI). Results: At T1, AN patients showed reduced sequence learning compared with HC. However, no behavioural differences between HC and AN patients were found at T2. At the neural level, acute AN patients showed reduced thalamic activation during sequence learning compared with HC subjects. Conclusions: Our data suggest that the impaired implicit learning observed in adolescent AN patients before weight gain is a state-related dysfunction that normalises with weight gain. Thus, implicit learning deficits do not appear to represent a predisposition towards developing AN; rather, these deficits should be considered when planning psychotherapeutic interventions for acute AN. Reduced thalamic activation during the acute stage of AN may indicate a starvation-induced dysfunction of the neural circuitry that is involved in behavioural flexibility.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Firk, Christine UNSPECIFIED orcid.org/0000-0002-3310-0011 UNSPECIFIED Mainz, Verena UNSPECIFIED UNSPECIFIED UNSPECIFIED Schulte-Ruether, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Fink, Gereon UNSPECIFIED UNSPECIFIED UNSPECIFIED Herpertz-Dahlmann, Beate UNSPECIFIED UNSPECIFIED UNSPECIFIED Konrad, Kerstin UNSPECIFIED orcid.org/0000-0001-9039-2615 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-388807
DOI:	10.1111/jcpp.12384
Journal or Publication Title:	J. Child Psychol. Psychiatry
Volume:	56
Number:	11
Page Range:	S. 1168 - 1177
Date:	2015
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1469-7610
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ADOLESCENTS; PERFORMANCE; CHILDREN; MEMORY; FMRI; DISORDERS; THALAMUS; ANATOMY Multiple languages Psychology, Developmental; Psychiatry; Psychology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/38880