NEW HUMAN VO CLUSTER SUBDIVISIONS DERIVED FROM VISUAL FIELD MAPPING

本子项目是利用由NIH/NCRR资助的中心赠款提供的资源的众多研究子项目之一。子项目和研究者（PI）可能已经从另一个NIH来源获得了主要资金，因此可以在其他CRISP条目中表示。列出的机构是中心的，不一定是研究者的机构。人类的视觉皮层被组织成一组不同的视野图。对V1、V2和V3等几种人类地图的组织有共识，但对其他地点的视野地图的存在和组织存在分歧。在这里，我们报告了人类枕侧皮层的测量结果。我们还描述了这些地图及其附近的颜色，物体和面部响应的第一次协调测量。方法采用相位编码fMRI成像方法测量枕侧皮层的视野图。旋转的楔子和扩展的环刺激由3¿和16¿黑白，漂流径向棋盘图案组成。时间相位编码的BOLD信号使用自动的atlas拟合算法进行分析，以定义视觉区域边界。通过进行单独的颜色-亮度和物体-面部交换实验来测量颜色、面部和物体选择反应。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. INTRO Human visual cortex is organized into a set of distinct visual field maps. There is consensus on the organization of several human maps, including V1, V2, and V3, but there is disagreement about the presence and organization of visual field maps in other locations. Here, we report measurements in human ventral occipital cortex. We also describe the first coordinated measurements of color, object and face responsivity in and near these maps. METHODS We measured visual field maps in ventral occipital cortex using phase-encoded fMRI mapping methods. The rotating wedge and expanding ring stimuli consisted of 3¿ and 16¿ black and white, drifting radial checkerboard patterns. Temporal phase-encoded BOLD signals were analyzed with an automated, atlas-fitting algorithm to define the visual area boundaries. Color, face, and object-selective responses were measured by performing separate color-luminance and object-face exchange experiments.