RT Journal Article
SR Electronic
T1 Saccadic suppression as a perceptual consequence of efficient sensorimotor estimation
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 099051
DO 10.1101/099051
A1 F. Crevecoeur
A1 K. P. Kording
YR 2017
UL http://biorxiv.org/content/early/2017/01/08/099051.abstract
AB Humans perform saccadic eye movements two to three times per second. When doing so, the nervous system strongly suppresses sensory feedback for extended periods of time in comparison with the movement time. Why does the brain discard so much visual information? Here we suggest that perceptual suppression may arise from efficient sensorimotor computations, assuming that perception and control are fundamentally linked. More precisely, we show that a Bayesian estimator should reduce the weight of sensory information around the time of saccades, as a result of signal dependent noise and of sensorimotor delays. Such reduction parallels the behavioral suppression occurring prior to and during saccades, and the reduction in neural responses to visual stimuli observed across the visual hierarchy. We suggest that saccadic suppression originates from efficient sensorimotor processing, indicating that the brain shares neural resources for perception and control.