0636
Layer- and column-resolved 7T fMRI reveals neural correlates of consciousness in human visual cortex and thalamus
Chencan Qian1,2, Chengwen Liu3, Jinyou Zou4, Yan Zhuo1,2, Sheng He1,2,5, and Peng Zhang1,2
1State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China, 2University of Chinese Academy of Sciences, Beijing, China, 3Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China, 4Max-Planck-Institute for Biological Cybernetics, Tübingen, Germany, 5Department of Psychology, University of Minnesota, Minneapolis, MN, United States
Eye-specific BOLD modulation was stronger in V1 superficial layer and absent in the LGN during binocular rivalry.
Figure 3. Laminar resolved BOLD responses in V1 ocular dominance columns (ODC) during binocular rivalry and simulated replay. (a) ODC map of a typical subject. red: left eye, blue: right eye. (b) Perception related BOLD response time locked to button presses. The modulation amplitude in rivalry was about half of that in replay. (c) Equivolume cortical depth estimation. (d) Laminar profile of normalized modulation showed significant interaction between rivalry and replay conditions.
Figure 4. Eye-specific BOLD responses in LGN ocular dominance clusters during binocular rivalry and simulated replay. (a) Ocular dominance clusters of a typical subject. red: left eye, blue: right eye. (b) Perception related BOLD response time locked to button presses. There was robust eye-specific modulation in the replay condition, which was minimal in the rivalry condition.