| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Research Abstract |
We proposed a method for the estimation of neuronal receptive field from population receptive field measured with fMRI. The estimation is based on the fact that population receptive field size is affected by both neuronal receptive field size and the scatter of neuronal receptive field centers within the voxel. We subtracted the effect of latter component, which can be estimated by cortical magnification factor, and calculated the neuronal receptive field size. The method was implemented in the software called mrVista (Stanford).
We also applied the population receptive field method on the visual field representation around human V4 (hV4). There has been a debate on whether hV4 represents full contralateral visual field. We found that hV4 lacks full representation for some subjects, but it results from a large venous around hV4. These results were published in Journal of Vision.
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