title: Contributions of cortical feedback to sensory processing in primary visual cortex.
abstract: Closing the structure-function divide is more challenging in the brain than in any other organ (Lichtman and Denk, 2011). For example, in early visual cortex, feedback projections to V1 can be quantified (e.g., Budd, 1998) but the understanding of feedback function is comparatively rudimentary (Muckli and Petro, 2013). Focusing on the function of feedback, we discuss how textbook descriptions mask the complexity of V1 responses, and how feedback and local activity reflects not only sensory processing but internal brain states.
authors.affiliation: Centre for Cognitive Neuroimaging, Institute of Neuroscience and Psychology, University of Glasgow Glasgow, UK.
authors.forename: Lucy S
authors.initials: LS
authors.lastname: Petro
authors.affiliation: Centre for Cognitive Neuroimaging, Institute of Neuroscience and Psychology, University of Glasgow Glasgow, UK.
authors.forename: Luca
authors.initials: L
authors.lastname: Vizioli
authors.affiliation: Centre for Cognitive Neuroimaging, Institute of Neuroscience and Psychology, University of Glasgow Glasgow, UK.
authors.forename: Lars
authors.initials: L
authors.lastname: Muckli
keywords: V1; electrophsyiology; fMRI; feedback; vision