| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
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| Outline of Final Research Achievements |
Hippocampal time cells are known to encode specific moments of temporally organized experiences that may support hippocampal functions for episodic memory. However, little is known about the detailed features of the temporal representation of time cells during changes in temporal structures of episodes. In this research, we investigated CA1 neuronal activity during temporal bisection tasks, in which the sets of time intervals to be discriminated were designed to be extended or contracted across the blocks of trials. We found that CA1 neurons encoded elapsed time during the interval, and the representation was scaled when the set of interval times was varied. In addition, the neuronal activities reflected the rats’ decisions on the basis of their time estimation. These findings indicate that scalable features of time cells may support the capability of flexible temporal representation for memory formation.
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