2010 Fiscal Year Final Research Report
Estimation of human neural receptive field based on population receptive field and its correlates with adaptive spatial pooling mechanisms
| Project/Area Number |
21700343
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Neuroscience in general
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| Research Institution | The University of Tokyo |
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Principal Investigator |
AMANO Kaoru The University of Tokyo, 大学院・新領域創成科学研究科, 助教 (70509976)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 脳機能計測 / fMRI / MEG / 受容野 |
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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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