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Updated: Jul 17, 2026
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Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
Published on: September 13, 2015
Neural coordination of multijoint stretch reflexes in the human arm
1Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA, Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, USA.
Summary
Stretch sensitive reflexes coordinate arm movements via neurally-mediated pathways. These heteronymous pathways link muscles across multiple joints, significantly impacting reflex responses to whole limb posture perturbations.
Area of Science:
- Neuroscience
- Biomechanics
- Human Movement Science
Background:
- Stretch sensitive reflexes are crucial for coordinating posture and movement.
- Assessing reflex mechanisms during multijoint perturbations is challenging due to biomechanical and neural coupling uncertainties.
Purpose of the Study:
- To investigate neurally-mediated coupling between upper limb muscles.
- To determine the contribution of these pathways to reflex responses during whole limb perturbations.
Main Methods:
- Combined experimental and computational modeling approaches.
- Analysis of reflex activity during multijoint perturbations of the human arm.
Main Results:
- Evidence suggests significant neurally-mediated coupling between human upper limb muscles.
- Heteronymous pathways linking muscles across multiple joints were identified.
Conclusions:
- Neurally-mediated heteronymous pathways play a significant role in coordinating arm posture and movement.
- These pathways contribute substantially to reflex responses following limb perturbations.
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