Orientation-Cue Invariant Population Responses to Contrast-Modulated and Phase-Reversed Contour Stimuli in Macaque V1 and V2

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	Orientation-Cue Invariant Population Responses to Contrast-Modulated and Phase-Reversed Contour Stimuli in Macaque V1 and V2
	An, X ; Gong, HL ; Yin, JP ; Wang, XC ; Pan, YX ; Zhang, X ; Lu, YL ; Yang, YP ; Toth, Z ; Schiessl, I ; McLoughlin, N ; Wang, W
刊名	PLOS ONE
	2014
卷号	9 期号:9 页码:e106753-e106753
关键词	PRIMARY VISUAL-CORTEX CAT STRIATE CORTEX NON-FOURIER MOTION INFERIOR TEMPORAL NEURONS RECEPTIVE-FIELDS 2ND-ORDER MOTION FUNCTIONAL ARCHITECTURE ILLUSORY CONTOURS AREA V2 SPATIAL-FREQUENCY
ISSN号	1932-6203
通讯作者	Wang, W (reprint author), Chinese Acad Sci, Inst Neurosci, State Key Lab Neurosci, Shanghai, Peoples R China.,w.wang@ion.ac.cn
英文摘要	Visual scenes can be readily decomposed into a variety of oriented components, the processing of which is vital for object segregation and recognition. In primate V1 and V2, most neurons have small spatio-temporal receptive fields responding selectively to oriented luminance contours (first order), while only a subgroup of neurons signal non-luminance defined contours (second order). So how is the orientation of second-order contours represented at the population level in macaque V1 and V2? Here we compared the population responses in macaque V1 and V2 to two types of second-order contour stimuli generated either by modulation of contrast or phase reversal with those to first-order contour stimuli. Using intrinsic signal optical imaging, we found that the orientation of second-order contour stimuli was represented invariantly in the orientation columns of both macaque V1 and V2. A physiologically constrained spatio-temporal energy model of V1 and V2 neuronal populations could reproduce all the recorded population responses. These findings suggest that, at the population level, the primate early visual system processes the orientation of second-order contours initially through a linear spatio-temporal filter mechanism. Our results of population responses to different second-order contour stimuli support the idea that the orientation maps in primate V1 and V2 can be described as a spatial-temporal energy map.
学科主题	Multidisciplinary Sciences
收录类别	SCI
资助信息	National '973' Programs [2011CBA00400, 2009CB941303]
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.sibs.ac.cn/handle/331001/2643]
专题	上海神经科学研究所_神经所(总)
推荐引用方式 GB/T 7714	An, X,Gong, HL,Yin, JP,et al. Orientation-Cue Invariant Population Responses to Contrast-Modulated and Phase-Reversed Contour Stimuli in Macaque V1 and V2[J]. PLOS ONE,2014,9(9):e106753-e106753.
APA	An, X.,Gong, HL.,Yin, JP.,Wang, XC.,Pan, YX.,...&Wang, W.(2014).Orientation-Cue Invariant Population Responses to Contrast-Modulated and Phase-Reversed Contour Stimuli in Macaque V1 and V2.PLOS ONE,9(9),e106753-e106753.
MLA	An, X,et al."Orientation-Cue Invariant Population Responses to Contrast-Modulated and Phase-Reversed Contour Stimuli in Macaque V1 and V2".PLOS ONE 9.9(2014):e106753-e106753.