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bioRxiv · 10.1101/151381

Weighted integration of short term memory and sensory signals in the oculomotor system

Deravet, N.·Blohm, G.·Orban de Xivry, J.-J.·Lefevre, P.
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Abstract

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.\n\nHere, 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.\n\nWe 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.

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Deravet, N., Blohm, G., Orban de Xivry, J.-J., Lefevre, P.. 2017-06-19. Weighted integration of short term memory and sensory signals in the oculomotor system. https://doi.org/10.1101/151381

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