Reinforcement learning in young adults with developmental language impairment  

Oleh:

Lee, Joanna C. ; Tomblin, J. Bruce

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 123 no. 3 (2012), page 154-163.
Topik: Reinforcement learning; Language; Developmental language impairment; Corticostriatal loops; Procedural Deficit Hypothesis
Fulltext: 123_03_Lee.pdf (368.85KB)

Isi artikel

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.

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