尾状核ニューロンの可塑性と行動への影響(感覚-知覚-行動の神経基盤を探る,第22回大会 シンポジウム1)
2004 年 23 巻 1 号 p. 38-42
詳細
2004 年 23 巻 1 号 p. 38-42
The caudate nucleus in the primate basal ganglia plays an important role in integrating cognitive/motivational and motor signals, in addition to its classical role in movement generation. Our recent studies have shown that some population of caudate neurons are sensitive to the association between visual target position and reward availability. This activity is anticipatory in the sense that it starts even before the target onset. The caudate anticipatory neurons change their activity just after a single experience of 'surprising' reward event (unexpected reward delivery or unexpected lack of reward delivery), with which saccade latency correlates well. These data demonstrate that the caudate nucleus is a part of neural circuits that enable animals to quickly adapt to ever-changing environmental situations.
