2013 Fiscal Year Final Research Report
Neuronal mechanisms underlying representation of upcoming reward outcomes in macaque temporal cortex
| Project/Area Number |
23530971
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
SUGASE-MIYAMOTO 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)
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| Co-Investigator(Renkei-kenkyūsha) |
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)
SHIDARA Munetaka 筑波大学, 人間総合科学研究科, 教授 (10357189)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 記憶 / 視覚 / 報酬 / 連合 |
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| Research Abstract |
The importance of the perirhinal cortex for reward-related information processing has been suggested. To examine whether or not neurons in this cortex represent reward information flexibly when a visual stimulus indicates either a rewarded or unrewarded outcome, we examined neuronal activity in the macaque perirhinal cortex using a conditional-association cued-reward task. The task design allowed us to study how the neuronal responses depended on the animal's prediction of whether it would or would not be rewarded. Two visual stimuli, a color stimulus followed by a pattern stimulus, were sequentially presented. Each pattern stimulus was conditionally associated with both rewarded and unrewarded outcomes depending on the preceding color stimulus. An activity depending on the upcoming reward outcomes was observed during the pattern stimulus presentation, indicating that the perirhinal cortexneurons flexibly signals the meaning of a stimulus independent of the identity of the stimulus.
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