| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Research Abstract |
We investigated the architecture of multi-synaptic top-down pathways toward visual area4 (V4) of ventral stream and visual area 5 (MT/V5) of dorsal stream, employing retrograde trans-synaptic transport of rabies virus. In addition, multi-synaptic architecture from the medial temporal lobe to V4 was also investigated. We found that frontal inputs to MT/V5 and V4 mainly arise from area 46v. In addition, we found shot-cut pathway from the hippocampus proper to V4. These results indicate that multi-synaptic architecture may provide top-down information about object recognition accomplished throughoccipito-temporal and occipito-parietal pathways.
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