Population receptive field dynamics in human visual cortex.
Population receptive field dynamics in human visual cortex.
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DOI:
10.1371/journal.pone.0037686
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Morland AB
中科院分区:
文献类型:
--
作者:
Haak KV;Cornelissen FW;Morland AB
Seminal work in the early nineties revealed that the visual receptive field of neurons in cat primary visual cortex can change in location and size when artificial scotomas are applied. Recent work now suggests that these single neuron receptive field dynamics also pertain to the neuronal population receptive field (pRF) that can be measured in humans with functional magnetic resonance imaging (fMRI). To examine this further, we estimated the pRF in twelve healthy participants while masking the central portion of the visual field. We found that the pRF changes in location and size for two differently sized artificial scotomas, and that these pRF dynamics are most likely due to a combination of the neuronal receptive field position and size scatter as well as modulatory feedback signals from extrastriate visual areas.
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