Abstract
Visual homeostatic processing in V1: when probability meets dynamics.
Highlights
Edited by: Mikhail Lebedev, Duke University, USA Reviewed by: David Eriksson, Max Planck Institute, Germany Colin Walter Giles Clifford, University of New South Wales, Australia
Using sequences of differently oriented gratings (32 ms frame duration) and biasing the input statistics toward one orientation, such that the selected orientation occurred three to four times more often than all other orientations, a remarkable adaptive behavior was found: decreased activities in response to the adapter were exactly counterbalanced such that the average population signal was kept constant. This was attributed to homeostatic mechanisms “that work toward two simple goals: to maintain equality in the time-averaged responses across the population and to enforce independence in selectivity across the population.”
When calculating the necessary time span to show these effects, the authors concluded that V1 needs ∼1.7 s in order to catch up with the actual statistical input properties and, adapt adequately to the bias within the sequence of input
Summary
Edited by: Mikhail Lebedev, Duke University, USA Reviewed by: David Eriksson, Max Planck Institute, Germany Colin Walter Giles Clifford, University of New South Wales, Australia. A commentary on Adaptation maintains population homeostasis in primary visual cortex by Benucci, A., Saleem, A.B., and Carandini, M.
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