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Seeing Your Foot Move Changes Muscle Proprioceptive Feedback

Journal article
Authors Rochelle Ackerley
M. Chancel
J. M. Aimonetti
E. Ribot-Ciscar
A. Kavounoudias
Published in Eneuro
Volume 6
Issue 2
Pages 11
ISSN 2373-2822
Publication year 2019
Published at Institute of Neuroscience and Physiology, Department of Physiology
Pages 11
Language en
Keywords fusimotor drive, human, kinesthesia, movement perception, muscle, proprioception, corticospinal projections, multisensory integration, spindle, sensitivity, fusimotor activity, neural mechanisms, motor areas, afferents, vision, information, forearm
Subject categories Physiology


Multisensory effects are found when the input from single senses combines, and this has been well researched in the brain. Presently, we examined in humans the potential impact of visuo-proprioceptive interactions at the peripheral level, using microneurography, and compared it with a similar behavioral task. We used a paradigm where participants had either proprioceptive information only (no vision) or combined visual and proprioceptive signals (vision). We moved the foot to measure changes in the sensitivity of single muscle afferents, which can be altered by the descending fusimotor drive. Visual information interacted with proprioceptive information, where we found that for the same passive movement, the response of muscle afferents increased when the proprioceptive channel was the only source of information, as compared with when visual cues were added, regardless of the attentional level. Behaviorally, when participants looked at their foot moving, they more accurately judged differences between movement amplitudes, than in the absence of visual cues. These results impact our understanding of multisensory interactions throughout the nervous system, where the information from different senses can modify the sensitivity of peripheral receptors. This has clinical implications, where future strategies may modulate such visual signals during sensorimotor rehabilitation.

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