| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Although we found that the feedback projection from the mouse posterior parietal cortex (PPC) to the primary visual cortex (V1) exists and suppresses V1, its physiological role was unknown. Therefore, we made a hypothesis that the projection from the PPC forms an initial selection filter of selective attention in V1, and proceeded with the analysis. We found that (1) the PPC has an ability to cause plastic changes in V1 responses to visual stimuli in a selective manner, (2) the PPC modifies the direction selectivity of excitatory neurons in V1, (3) the function of the V1 suppression is mapped to the PPC, etc. These results are supposed to support the hypothesis and encourage the further analysis.
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