| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
It is essential for primates which are social animals to predict upcoming value of social information regarding others. To elucidate neural mechanisms underlying above-mentioned cognitive function, we recorded activity of neurons in the monkey nucleus accumbens and amygdala in response to stimulus predicting social reward or punishment. These brain areas have been known to be involved in reward prediction or social cognition. Average activity of neurons in the nucleus accumbens conveyed value of social information in addition to value of water. By contrast, only a few neurons in the amygdala conveyed value of social information. These results indicate that the monkey ventral striatal neurons are involved in prediction of value of social information although we did not get evidence of source of social information in the nucleus accumbens.
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