Abstract #3839

Attention field size alters patterns of population receptive field in the early visual cortex

Bo Liu¹, Xiaochun Wang^1,2, Le Wang², Qiaojun Qu¹, Xiang Feng³, Wei Zhang¹, Bin Wang⁴, and Hui Zhang^1,2

¹College of Medical Imaging, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China, ²Department of Radiology, First Clinical Medical College, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China, ³MR Scientific Marketing, Diagnosis Imaging, Siemens Healthcare Ltd, Beijing 100102, China, ⁴College of Information and Computer, Taiyuan University of Technology, Taiyuan 030001, Shanxi Province, China

The effect of attention field (AF) is not only constrained to spatial positions of attention but also to size. However, the direct link of AF size to receptive field (RF) has not been well established. In our study, we demonstrated remarkable modulation of AF in the early visual cortex, with regard to size and location of population receptive field (pRF), emphatically. Specially, the differences in pRF size between focused and distributed attention conditions increase with eccentricity, especially in the V3 area. Considering pRF location, eccentricity is larger under distributed attention conditions than under focused attention conditions at the perifovea in the V3 area.

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