Abstract：
:How primates perceive objects along with their detailed features remains a mystery. This ability to make fine visual discriminations depends upon a high-acuity analysis of spatial frequency (SF) along the visual hierarchy from V1 to inferotemporal cortex. By studying the transformation of SF across macaque parafoveal V1, V2, and V4, we discovered SF-selective functional domains in V4 encoding higher SFs up to 12 cycles/°. These intermittent higher-SF-selective domains, surrounded by domains encoding lower SFs, violate the inverse relationship between SF preference and retinal eccentricity. The neural activities of higher- and lower-SF domains correspond to local and global features, respectively, of the same stimuli. Neural response latencies in high-SF domains are around 10 ms later than in low-SF domains, consistent with the coarse-to-fine nature of perception. Thus, our finding of preserved resolution from V1 into V4, separated both spatially and temporally, may serve as a connecting link for detailed object representation.
journal_name
Neuronjournal_title
Neuronauthors
Lu Y,Yin J,Chen Z,Gong H,Liu Y,Qian L,Li X,Liu R,Andolina IM,Wang Wdoi
10.1016/j.neuron.2018.03.009subject
Has Abstractpub_date
2018-04-18 00:00:00pages
417-428.e3issue
2eissn
0896-6273issn
1097-4199pii
S0896-6273(18)30186-7journal_volume
98pub_type
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