Dynamic Recruitment of the Feedforward and Recurrent Mechanism for Black–White Asymmetry in the Primary Visual Cortex

• DOI: 10.1523/jneurosci.0168-23.2023
• Publication Date: 2023-07-24T17:50:18Z
• Authors: Weifeng Dai; Tian Wang; Yang Li; Yi Yang; Yange Zhang; Jian Kang; Yujie Wu; Hongbo Yu; Dajun Xing
• Keywords: Stimulus (psychology); Feed forward

Black and white information is asymmetrically distributed in natural scenes, evokes asymmetric neuronal responses, causes perceptions. Recognizing the universality essentiality of black-white asymmetry visual processing, neural substrates for remain unclear. To disentangle role feedforward recurrent mechanisms generation cortical asymmetry, we recorded V1 laminar responses LGN anesthetized cats both sexes. In a column, found that starts at input layer becomes more pronounced output layer. We also distinct dynamics between Specifically, black dominate all layers after stimulus onset. After offset, are balanced layer, but still Compared with rebound response significantly suppressed. The relative suppression strength evoked by stimuli notably stronger depends on location within ON-OFF map. A model delayed polarity-selective explains which prominent connections identified Granger causality analysis. addition to strength, interlaminar differences spatial receptive field varied dynamically. Our findings suggest dynamically recruited V1.