A direct interareal feedback-to-feedforward circuit in primate visual cortex
The mammalian sensory neocortex consists of hierarchically organized areas reciprocally
connected via feedforward (FF) and feedback (FB) circuits. Several theories of hierarchical
computation ascribe the bulk of the computational work of the cortex to looped FF-FB circuits
between pairs of cortical areas. However, whether such corticocortical loops exist remains
unclear. In higher mammals, individual FF-projection neurons send afferents almost
exclusively to a single higher-level area. However, it is unclear whether FB-projection …
connected via feedforward (FF) and feedback (FB) circuits. Several theories of hierarchical
computation ascribe the bulk of the computational work of the cortex to looped FF-FB circuits
between pairs of cortical areas. However, whether such corticocortical loops exist remains
unclear. In higher mammals, individual FF-projection neurons send afferents almost
exclusively to a single higher-level area. However, it is unclear whether FB-projection …
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