Layer-specific spatiotemporal dynamics of feedforward and feedback in human visual object perception.

ABSTRACT: Visual object perception is mediated by information flow between regions of the ventral visual stream along feedforward and feedback anatomical connections. However, feedforward and feedback signals during naturalistic vision are rapid and overlapping, complicating their identification and precise functional specification. Here we recorded human layer-specific fMRI responses to naturalistic object images in early visual cortex (EVC) and lateral occipital complex (LOC) to isolate feedforward and feedback information signals spatially by their cortical layer specific termination pattern. We combined these layer-specific fMRI responses with electroencephalography (EEG) responses for the same images to segregate feedforward and feedback signals in both time and space. Feedforward signals emerg

SUBMITTER: Carricarte T 

PROVIDER: S-EPMC12132538 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature