Stream-specific feedback inputs to the primate primary visual cortex.

ABSTRACT: The sensory neocortex consists of hierarchically-organized areas reciprocally connected via feedforward and feedback circuits. Feedforward connections shape the receptive field properties of neurons in higher areas within parallel streams specialized in processing specific stimulus attributes. Feedback connections have been implicated in top-down modulations, such as attention, prediction and sensory context. However, their computational role remains unknown, partly because we lack knowledge about rules of feedback connectivity to constrain models of feedback function. For example, it is unknown whether feedback connections maintain stream-specific segregation, or integrate information across parallel streams. Using viral-mediated labeling of feedback connections arising from specific cyto

SUBMITTER: Federer F 

PROVIDER: S-EPMC7801467 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature