期刊
BEHAVIOURAL PROCESSES
卷 66, 期 3, 页码 309-332出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.beproc.2004.03.011
关键词
categorization; classification; memory; caudate nucleus; working memory; prefrontal cortex
资金
- NIMH NIH HHS [MH3760, R01 MH59196] Funding Source: Medline
A fundamental question is whether people have available one category leaming system, or many. Most multiple systems advocates postulate one explicit and one implicit system. Although there is much agreement about the nature of the explicit system, there is less agreement about the nature of the implicit system. In this article, we review a dual systems theory of category learning called competition between verbal and implicit systems (COVIS) developed by Ashby et al. (1998). The explicit system dominates the learning of verbalizable, rule-based category structures and is mediated by frontal brain areas such as the anterior cingulate, prefrontal cortex (PFC), and head of the caudate nucleus. The implicit system, which uses procedural learning, dominates the learning of non-verbalizable, information-integration category structures, and is mediated by the tail of the caudate nucleus and a dopamine-mediated reward signal. We review nine studies that test six a priori predictions from COVIS, each of which is supported by the data. (C) 2004 Elsevier B.V. All rights reserved.
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