How chunks, long-term working memory and templates offer a cognitive explanation for neuroimaging data on expertise acquisition: A two-stage framework

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• 作者：Alessandro Guida^a ; ^b ; ^{alessandro.guida@univ-rennes2.fr} ; ^{alessandro.guida.psychology@gmail.com} ; Fernand Gobet^c ; Hubert Tardieu^d ; Serge Nicolas^a
• 关键词：Expertise ; Chunks ; Long-term working memory ; Template theory ; Brain functional reorganization ; Working memory
• 刊名：Brain and Cognition
• 出版年：2012
• 期刊代码：120_02782626
• 类别：cp
• 出版时间：August, 2012
• 卷：79
• 期：3
• 页码：221-244
• 文件大小：1189 K

摘要

Our review of research on PET and fMRI neuroimaging of experts and expertise acquisition reveals two apparently discordant patterns in working-memory-related tasks. When experts are involved, studies show activations in brain regions typically activated during long-term memory tasks that are not observed with novices, a result that is compatible with functional brain reorganization. By contrast, when involving novices and training programs, studies show a decrease in brain regions typically activated during working memory tasks, with no functional reorganization. We suggest that the latter result is a consequence of practice periods that do not allow important structures to be completely acquired: knowledge structures (i.e., Ericsson and Kintsch鈥檚 retrieval structures; Gobet and Simon鈥檚 templates) and in a lesser way, chunks. These structures allow individuals to improve performance on working-memory tasks, by enabling them to use part of long-term memory as working memory, causing a cerebral functional reorganization. Our hypothesis is that the two brain activation patterns observed in the literature are not discordant, but involve the same process of expertise acquisition in two stages: from decreased activation to brain functional reorganization. The dynamic of these two physiological stages depend on the two above-mentioned psychological constructs: chunks and knowledge structures.