2015 Fiscal Year Final Research Report
The effect of temporally uncertain event on decision-making and its neural substrates.
| Project/Area Number |
25350992
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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 |
Basic / Social brain science
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 時間 / 不確実 / サル / 意思決定 / 数理モデル / 遅延 / 時間割引 |
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| Outline of Final Research Achievements |
A mathematical model showed that the impact of future event tends to be estimated as larger when the onset of that event was uncertain.Then a rhesus monkey was trained to perform decision-making task under temporally uncertain condition.In this task,the monkey must choose one of two alternatives whose delay to reward onset was uncertain. The degree of uncertainty was different between two alternatives. Unfortunately,the monkey failed to learn this task. Instead, time production task and different type of decision-making task under temporally certain condition were introduced. Combined the results from them,I found that the time monkey estimated varied in wide range and the monkey's sensitivity to delay is lower than the cases when the delay to the event was presented as the sequence of discrete steps.
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| Free Research Field |
神経科学
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