Takemura Hiromasa, Rokem Ariel, Winawer Jonathan, Yeatman Jason D, Wandell Brian A, Pestilli Franco
Department of Psychology, Stanford University, Stanford, CA, USA.
Department of Psychology, New York University, New York, NY, USA.
Cereb Cortex. 2016 May;26(5):2205-2214. doi: 10.1093/cercor/bhv064. Epub 2015 Mar 31.
Human visual cortex comprises many visual field maps organized into clusters. A standard organization separates visual maps into 2 distinct clusters within ventral and dorsal cortex. We combined fMRI, diffusion MRI, and fiber tractography to identify a major white matter pathway, the vertical occipital fasciculus (VOF), connecting maps within the dorsal and ventral visual cortex. We use a model-based method to assess the statistical evidence supporting several aspects of the VOF wiring pattern. There is strong evidence supporting the hypothesis that dorsal and ventral visual maps communicate through the VOF. The cortical projection zones of the VOF suggest that human ventral (hV4/VO-1) and dorsal (V3A/B) maps exchange substantial information. The VOF appears to be crucial for transmitting signals between regions that encode object properties including form, identity, and color and regions that map spatial information.
人类视觉皮层由许多组织成簇的视野图谱组成。标准的组织结构将视觉图谱分为腹侧和背侧皮层内的两个不同簇。我们结合功能磁共振成像（fMRI）、扩散磁共振成像（diffusion MRI）和纤维束成像技术，确定了一条主要的白质通路，即垂直枕束（VOF），它连接背侧和腹侧视觉皮层内的图谱。我们使用基于模型的方法来评估支持VOF布线模式几个方面的统计证据。有强有力的证据支持背侧和腹侧视觉图谱通过VOF进行交流这一假设。VOF的皮质投射区表明，人类腹侧（hV4/VO-1）和背侧（V3A/B）图谱交换了大量信息。VOF似乎对于在编码物体属性（包括形状、身份和颜色）的区域与映射空间信息的区域之间传输信号至关重要。
