| Project/Area Number |
22300138
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fusional social brain science
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Narihisa 独立行政法人産業技術総合研究所, ヒューマンライフテクノロジー研究部門, 主任研究員 (00392663)
HIGO Noriyuki 独立行政法人産業技術総合研究所, ヒューマンライフテクノロジー研究部門, 主任研究員 (80357839)
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| Co-Investigator(Renkei-kenkyūsha) |
SUGASE Yasuko 独立行政法人産業技術総合研究所, ヒューマンライフテクノロジー研究部門, 主任研究員 (40357257)
MIZUHIKI Takashi 筑波大学, 医学医療系, 助教 (60463824)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2011: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2010: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Keywords | 報酬価値 / 行動決定 / 労働負荷 / 単一ニューロン記録 / アカゲザル / 報酬系 / 自己選択効果 |
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| Research Abstract |
We investigated information processing mechanism of decision-making by using the task of choosing one of two alternatives that have different work load and reward amount. The error rate of the task performance was well explained by the exponential discounting model of the reward value. Neurons in the orbitofrontal cortex responded to the differential value of the two alternatives. On the other hand, in reward schedules, neurons in the dorsal raphe coded the beginning of the schedule and the reward information not only by the spike strengths but also by their temporal patterns.
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