RT Journal Article
SR Electronic
T1 Weighted integration of short term memory and sensory signals in the oculomotor system
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 151381
DO 10.1101/151381
A1 Nicolas Deravet
A1 Gunnar Blohm
A1 Jean-Jacques Orban de Xivry
A1 Philippe Lefèvre
YR 2017
UL http://biorxiv.org/content/early/2017/06/19/151381.abstract
AB Oculomotor behaviors integrate sensory and prior information to overcome sensory-motor delays and noise. After much debate about this process, reliability-based integration has recently been proposed and several models of smooth pursuit now include recurrent Bayesian integration or Kalman filtering. However, there is a lack of behavioral evidence supporting these theoretical predictions.Here, we independently manipulated the reliability of visual and prior information in a smooth pursuit task. Our results show that both smooth pursuit eye velocity and catch-up saccade amplitude were modulated by visual and prior information reliability.We interpret these findings as the continuous reliability-based integration of a short-term memory of target motion with visual information, which support modelling work. Furthermore, we suggest that saccadic and pursuit systems share this short-term memory. We propose that this short-term memory of target motion is quickly built and continuously updated, and constitutes a general building-block present in all sensorimotor systems.