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@ARTICLE{Firk:186564,
author = {Firk, C. and Mainz, V. and Schulte-Rüther, M. and Fink, G.
R. and Herpertz-Dahlmann, B. and Konrad, K.},
title = {{I}mplicit sequence learning in juvenile anorexia nervosa:
{N}eural mechanisms and the impact of starvation.},
journal = {Journal of Child Psychology $\&$ Psychiatry},
volume = {56},
number = {11},
issn = {0021-9630},
address = {Malden},
publisher = {Blackwell Publishing Limited},
reportid = {FZJ-2015-00637},
pages = {1168-1176},
year = {2015},
abstract = {BackgroundPrevious 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.MethodsIn 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).ResultsAt 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.ConclusionsOur 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.},
cin = {INM-3},
ddc = {050},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000365411200004},
pubmed = {pmid:25623396},
doi = {10.1111/jcpp.12384},
url = {https://juser.fz-juelich.de/record/186564},
}