PT  - JOURNAL ARTICLE
AU  - Nicolas Deravet
AU  - Gunnar Blohm
AU  - Jean-Jacques Orban de Xivry
AU  - Philippe Lefèvre
TI  - Weighted integration of short term memory and sensory signals in the oculomotor system
AID  - 10.1101/151381
DP  - 2017 Jan 01
TA  - bioRxiv
PG  - 151381
4099  - http://biorxiv.org/content/early/2017/06/19/151381.short
4100  - http://biorxiv.org/content/early/2017/06/19/151381.full
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.