Nonuniform and pathway-specific laminar processing of spatial frequencies in the primary visual cortex of primates

Tian Wang, Weifeng Dai, Yujie Wu, Yang Li, Yi Yang, Yange Zhang, Tingting Zhou, Xiaowen Sun, Gang Wang, Liang Li, Fei Dou and Dajun Xing ()
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Tian Wang: Beijing Normal University
Weifeng Dai: Beijing Normal University
Yujie Wu: Beijing Normal University
Yang Li: Beijing Normal University
Yi Yang: Beijing Normal University
Yange Zhang: Beijing Normal University
Tingting Zhou: Beijing Normal University
Xiaowen Sun: Beijing Normal University
Gang Wang: Beijing Institute of Basic Medical Sciences
Liang Li: Beijing Institute of Basic Medical Sciences
Fei Dou: Beijing Normal University
Dajun Xing: Beijing Normal University

Nature Communications, 2024, vol. 15, issue 1, 1-16

Abstract: Abstract The neocortex comprises six cortical layers that play a crucial role in information processing; however, it remains unclear whether laminar processing is consistent across all regions within a single cortex. In this study, we demonstrate diverse laminar response patterns in the primary visual cortex (V1) of three male macaque monkeys when exposed to visual stimuli at different spatial frequencies (SFs). These response patterns can be categorized into two groups. One group exhibit suppressed responses in the output layers for all SFs, while the other type shows amplified responses specifically at high SFs. Further analysis suggests that both magnocellular (M) and parvocellular (P) pathways contribute to the suppressive effect through feedforward mechanisms, whereas amplification is specific to local recurrent mechanisms within the parvocellular pathway. These findings highlight the non-uniform distribution of neural mechanisms involved in laminar processing and emphasize how pathway-specific amplification selectively enhances representations of high-SF information in primate V1.

Date: 2024
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DOI: 10.1038/s41467-024-48379-x

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