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Institute of Molecular and Clinical Ophthalmology Basel
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Schedule
Monday, May 30, 2022
7:00 PM Europe/Berlin
Domain
NeuroscienceHost
BCCN Munich lecture series
Duration
70 minutes
We hardly notice when there is a speck on our glasses, the obstructed visual information seems to be magically filled in. The visual system uses visual context to predict the content of the stimulus. What enables neurons in the visual system to respond to context when the stimulus is not available? In cortex, sensory processing is based on a combination of feedforward information arriving from sensory organs, and feedback information that originates in higher-order areas. Whereas feedforward information drives the activity in cortex, feedback information is thought to provide contextual signals that are merely modulatory. We have made the exciting discovery that mouse primary visual cortical neurons are strongly driven by feedback projections from higher visual areas, in particular when their feedforward sensory input from the retina is missing. This drive is so strong that it makes visual cortical neurons fire as much as if they were receiving a direct sensory input.
Andreas Keller
Institute of Molecular and Clinical Ophthalmology Basel
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