کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
925400 921489 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reinforcement learning in young adults with developmental language impairment
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی روانپزشکی بیولوژیکی
پیش نمایش صفحه اول مقاله
Reinforcement learning in young adults with developmental language impairment
چکیده انگلیسی

The aim of the study was to examine reinforcement learning (RL) in young adults with developmental language impairment (DLI) within the context of a neurocomputational model of the basal ganglia-dopamine system (Frank, Seeberger, & O’Reilly, 2004). Two groups of young adults, one with DLI and the other without, were recruited. A probabilistic selection task was used to assess how participants implicitly extracted reinforcement history from the environment based on probabilistic positive/negative feedback. The findings showed impaired RL in individuals with DLI, indicating an altered gating function of the striatum in testing. However, they exploited similar learning strategies as comparison participants at the beginning of training, reflecting relatively intact functions of the prefrontal cortex to rapidly update reinforcement information. Within the context of Frank’s model, these results can be interpreted as evidence for alterations in the basal ganglia of individuals with DLI.


► Impaired reinforcement learning found in developmental language impairment (DLI).
► Intact early response strategies to positive and negative feedback in DLI.
► Corticostriatal system likely to influence individual differences in language.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain and Language - Volume 123, Issue 3, December 2012, Pages 154–163
نویسندگان
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