Sensitivity of V1 Neurons to Direction of Spectral Motion

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	Sensitivity of V1 Neurons to Direction of Spectral Motion
	Yao, Haishan
刊名	CEREBRAL CORTEX
	2011
卷号	21 期号:4 页码:964-973
关键词	motion adaptation primary visual cortex scale change spatial frequency spectrotemporal receptive field PRIMARY VISUAL-CORTEX CAT STRIATE CORTEX PRIMARY AUDITORY-CORTEX RECEPTIVE-FIELDS SPATIAL-FREQUENCY SIMPLE CELLS MACAQUE V1 SPATIOTEMPORAL FREQUENCY ORIENTATION SELECTIVITY OPTIC FLOW
ISSN号	1047-3211
通讯作者	Yao, HS (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, State Key Lab Neurosci, Inst Neurosci, Shanghai 200031, Peoples R China,haishanyao@ion.ac.cn
英文摘要	Motion-in-depth causes changes in the size of retinal images in addition to producing optic flow patterns. A previous psychophysical study showed that human subjects can perceive expansion motion in texture stimuli that exhibit increases in the scale of image elements but no consistent optic flow pattern. The neural mechanisms by which the scale-change information is processed remain unknown. Here, we measured the responses of cat V1 and the lateral geniculate nucleus (LGN) neurons to a sequence of random images whose spatial frequency spectrum changed over time (i.e., average spatial scale expanded or contracted). We found that V1 neurons exhibit direction sensitivity to scale changes, with more cells preferring expansion than contraction motion. This direction sensitivity can be partly accounted for by the spectrotemporal receptive field of V1 neurons. Comparison of the direction sensitivity between V1 and LGN neurons showed that the sensitivity in V1 may originate from LGN neurons. Repetitive stimulation with expansion or contraction motion can decrease the sensitivity to the adapted direction in V1, and the effect can be transferred interocularly, suggesting that intracortical connections may be critically involved in the adaptation. Together, our results suggest that direction sensitivity to scale change in V1 may contribute to motion-in-depth processing.
学科主题	Neurosciences & Neurology
收录类别	SCI
资助信息	Chinese Academy of Sciences[KSCX2-YW-R-29]; National Basic Research Program in China (973 program)[2006CB806600]; Science and Technology of Shanghai Municipality[06dj14010]
语种	英语
公开日期	2012-07-13
内容类型	期刊论文
源URL	[http://ir.sibs.ac.cn/handle/331001/1545]
专题	上海神经科学研究所_神经所(总) 上海神经科学研究所_视觉神经生理学研究组
推荐引用方式 GB/T 7714	Yao, Haishan. Sensitivity of V1 Neurons to Direction of Spectral Motion[J]. CEREBRAL CORTEX,2011,21(4):964-973.
APA	Yao, Haishan.(2011).Sensitivity of V1 Neurons to Direction of Spectral Motion.CEREBRAL CORTEX,21(4),964-973.
MLA	Yao, Haishan."Sensitivity of V1 Neurons to Direction of Spectral Motion".CEREBRAL CORTEX 21.4(2011):964-973.