Altered implicit category learning in anorexia nervosa.
Altered implicit category learning in anorexia nervosa.
复制标题
改变神经性厌食症的内隐类别学习。
DOI：
10.1037/a0026771
复制
发表时间：
2012
期刊：
影响因子：
2.4
通讯作者：
Frank,GuidoKW
中科院分区：
文献类型：
--
作者：
Shott,MeganE;Filoteo,JVincent;Jappe,LeahM;Pryor,Tamara;Maddox,WTodd;Rollin,MichaelDH;Hagman,JenniferO;Frank,GuidoKW
ObjectiveRecent research has identified specific cognitive deficits in patients with anorexia nervosa (AN), including impairment in executive functioning and attention. Another such cognitive process, implicit category learning has been less studied in AN. This study examined whether implicit category learning is impaired in AN.MethodTwenty-one women diagnosed with AN and 19 control women (CW) were administered an implicit category learning task in which they were asked to categorize simple perceptual stimuli (Gabor patches) into one of two categories. Category membership was based on a linear integration (ie, an implicit task) of two stimulus dimensions (orientation and spatial frequency of the stimulus).ResultsAN individuals were less accurate on implicit category learning relative to age-matched CW. Model-based analyses indicated that, even when AN individuals used the appropriate (ie, implicit) strategy they were still impaired relative to CW who also used the same strategy. In addition, task performance in AN patients was worse the higher they were in self-reported novelty seeking and the lower they were in sensitivity to punishment.ConclusionsThese results indicate that AN patients have implicit category learning deficits, and given this type of learning is thought to be mediated by striatal dopamine pathways, AN patients may have deficits in these neural systems. The finding of significant correlations with novelty seeking and sensitivity to punishment suggests that feedback sensitivity is related to implicit learning in AN.(PsycINFO Database Record (c) 2016 APA, all rights reserved)
