期刊
JOURNAL OF NEUROSCIENCE
卷 33, 期 27, 页码 11227-11238出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.0318-13.2013
关键词
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资金
- Intramural Research Program at the National Eye Institute
- Grants-in-Aid for Scientific Research [24650143] Funding Source: KAKEN
A goal-directed action aiming at an incentive outcome, if repeated, becomes a skill that may be initiated automatically. We now report that the tail of the caudate nucleus (CDt) may serve to control a visuomotor skill. Monkeys looked at many fractal objects, half of which were always associated with a large reward (high-valued objects) and the other half with a small reward (low-valued objects). After several daily sessions, they developed a gaze bias, looking at high-valued objects even when no reward was associated. CDt neurons developed a response bias, typically showing stronger responses to high-valued objects. In contrast, their responses showed no change when object values were reversed frequently, although monkeys showed a strong gaze bias, looking at high-valued objects in a goal-directed manner. The biased activity of CDt neurons may be transmitted to the oculomotor region so that animals can choose high-valued objects automatically based on stable reward experiences.
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