2012年11月29日木曜日

Developing Intuition: Neural Correlates of Cognitive-Skill Learning in Caudate Nucleus


Xiaohong Wan, Daisuke Takano, Takeshi Asamizuya, Chisato Suzuki, Kenichi Ueno, Kang Cheng, Takeshi Ito, and Keiji Tanaka
J. Neurosci. 2012;32 17492-17501 Open Access

将棋プロジェクト。「プロ棋士は(アマに比べ)直観的に意思決定を行い、その際は尾状核が活動する」が、初心者が将棋のトレーニング(15週間)をすると?尾状核の活動が増加する(他の皮質活動は変化しない)。尾状核は直観的な意思決定に重要。 http://www.jneurosci.org/content/32/48/17492

正直言うと、前回のScience (Wang et al., 2011)より今回の方が良い研究だと思うけど…色々と難しい…

The superior capability of cognitive experts largely depends on automatic, quick information processing, which is often referred to as intuition. Intuition develops following extensive long-term training. There are many cognitive models on intuition development, but its neural basis is not known. Here we trained novices for 15 weeks to learn a simple board game and measured their brain activities in early and end phases of the training while they quickly generated the best next-move to a given board pattern. We found that the activation in the head of caudate nucleus developed over the course of training, in parallel to the development of the capability to quickly generate the best next-move, and the magnitude of the caudate activity was correlated with the subject's performance. In contrast, cortical activations, which already appeared in the early phase of training, did not further change. Thus, neural activation in the caudate head, but not those in cortical areas, tracked the development of capability to quickly generate the best next-move, indicating that circuitries including the caudate head may automate cognitive computations.

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