Dual agonist and antagonist muscle vibration produces a bias in end point with no change in variability

Muscle spindles provide critical proprioceptive feedback about muscle length to the central nervous system (CNS). Single muscle tendon vibration can stimulate muscle spindles, causing illusory limb positions, while dual muscle tendon vibration is thought to produce a noisy proprioceptive system. It...

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Bibliographic Details
Published in:Experimental brain research Vol. 243; no. 10; p. 204
Main Authors: Eschelmuller, Gregg, Inglis, J. Timothy, Kim, Hyosub, Chua, Romeo
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 02.09.2025
Springer Nature B.V
Subjects:
Adult
Agonists
Bias
Biomedical and Life Sciences
Biomedicine
Central nervous system
Changes
Elbow
Feedback
Feedback, Sensory - physiology
Female
Hostility
Humans
Limbs
Male
Movement - physiology
Muscle spindles
Muscle Spindles - physiology
Muscle, Skeletal - physiology
Muscles
Nervous system
Neurology
Neurosciences
Proprioception
Proprioception - physiology
Psychomotor Performance - physiology
Python
Vibration
Vibrations
Young Adult
United States > US
Muscle spindle
Tendon vibration
Proprioception
Motor control
Kinesthesia
ISSN:0014-4819, 1432-1106, 1432-1106
Online Access:Get full text
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Summary:Muscle spindles provide critical proprioceptive feedback about muscle length to the central nervous system (CNS). Single muscle tendon vibration can stimulate muscle spindles, causing illusory limb positions, while dual muscle tendon vibration is thought to produce a noisy proprioceptive system. It is currently unclear exactly how the CNS uses kinesthetic feedback from the agonist and antagonist muscles during target-directed reaches. The purpose of the current project was to investigate the effects of agonist, antagonist, and dual agonist/antagonist vibration during target-directed reaching. Using an elbow extension task, we found that antagonist muscle vibration produced an undershooting effect relative to the no-vibration control, while agonist muscle vibration produced an overshooting effect relative to the no-vibration control. Neither of the single muscle vibrations produced any change in the variable error of the movements. While it was originally hypothesized that dual agonist/antagonist vibration would increase participants’ variable error with no change in bias, the opposite was found. Participants undershot relative to the no-vibration control with no change in variable error. Overall, the results from this study suggest that dual vibration does not necessarily create a noisy proprioceptive system but can produce a bias in end point.
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ISSN:0014-4819
1432-1106
1432-1106
DOI:10.1007/s00221-025-07143-3