Abstract #3134

Multiple Loci for Foveolar Vision in Macaque Monkey

Meizhen Qian^1,2, Jianbao Wang^1,2, Yang Gao^1,2,3, Yin Liu¹, Dengfeng Zhou¹, Xiaotong Zhang^1,2,3, Jiaming Hu^1,2, and Anna Wang Roe^1,2,4

¹Department of Neurosurgery of the Second Affiliated Hospital and Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou, China, ²MOE Frontier Science Center for Brain Science and Brain-Machine Integration, Zhejiang University, Hangzhou, China, ³College of Electrical Engineering, Zhejiang University, Hangzhou, China, ⁴Key Laboratory for Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, China

Synopsis

Keywords: Task/Intervention Based fMRI, Neuroscience, foveolar vision；ultra-high field fMRI; awake monkey

Motivation: Foveolar vision (central 1º of vision) is important for many visual behaviors; however, its cortical representation is poorly understood.

Goal(s): To understand the functional organization of foveolar visual cortex in macaque monkey.

Approach: Use human 7T to conduct fMRI of foveal visual cortex at submillimeter resolution (0.6mm in-plane) in awake fixating macaque monkeys.

Results: We found at least 8 distinct loci of foveolar representation per hemisphere, one each for dorsal and ventral V1/V2, V2/V3, V3/V4, V4/TEO. These loci surround a substantial cortical territory (the foveolar core) which lies outside topographic cortex.

Impact: The foveolar core may represent a higher-order specialization for foveal behaviors.

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