Larsson Jonas, Heeger David J
Department of Psychology and Center for Neural Science, New York University, New York, New York 10003, USA.
J Neurosci. 2006 Dec 20;26(51):13128-42. doi: 10.1523/JNEUROSCI.1657-06.2006.
We describe two visual field maps, lateral occipital areas 1 (LO1) and 2 (LO2), in the human lateral occipital cortex between the dorsal part of visual area V3 and visual area V5/MT+. Each map contained a topographic representation of the contralateral visual hemifield. The eccentricity representations were shared with V1/V2/V3. The polar angle representation in LO1 extended from the lower vertical meridian (at the boundary with dorsal V3) through the horizontal to the upper vertical meridian (at the boundary with LO2). The polar angle representation in LO2 was the mirror-reversal of that in LO1. LO1 and LO2 overlapped with the posterior part of the object-selective lateral occipital complex and the kinetic occipital region (KO). The retinotopy and functional properties of LO1 and LO2 suggest that they correspond to two new human visual areas, which lack exact homologues in macaque visual cortex. The topography, stimulus selectivity, and anatomical location of LO1 and LO2 indicate that they integrate shape information from multiple visual submodalities in retinotopic coordinates.
我们描述了人类外侧枕叶皮层中位于视觉区域V3背侧部分与视觉区域V5/MT+之间的两个视野图,即外侧枕叶区域1(LO1)和2(LO2)。每个图都包含对侧视觉半视野的地形图表示。偏心率表示与V1/V2/V3共享。LO1中的极角表示从下垂直子午线(在与背侧V3的边界处)延伸穿过水平方向至上垂直子午线(在与LO2的边界处)。LO2中的极角表示是LO1中极角表示的镜像反转。LO1和LO2与物体选择性外侧枕叶复合体的后部以及运动枕叶区域(KO)重叠。LO1和LO2的视网膜拓扑结构和功能特性表明它们对应于两个新的人类视觉区域,在猕猴视觉皮层中缺乏确切的同源物。LO1和LO2的地形、刺激选择性和解剖位置表明它们在视网膜坐标中整合来自多个视觉子模态的形状信息。