Proprioceptive sensitivity to imposed finger deflections

Author:

Long Katie H.12ORCID,McLellan Kristine R.3ORCID,Boyarinova Maria3,Bensmaia Sliman J.134ORCID

Affiliation:

1. Committee on Computational Neuroscience, University of Chicago, Chicago, Illinois

2. Medical Scientist Training Program, University of Chicago, Chicago, Illinois

3. Department of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois

4. Grossman Institute for Neuroscience, Quantitative Biology, and Human Behavior, University of Chicago, Chicago, Illinois

Abstract

Manual dexterity and stereognosis are supported by two exquisite sensory systems, namely touch and proprioception. Here, we measure the sensitivity of hand proprioception and show that humans can sense the posture and movements of the fingers with great accuracy. We also show that application of a skin vibration does not impair sensitivity, suggesting that proprioceptive acuity relies primarily on receptors in the muscles (and possibly tendons) rather than the skin.

Funder

HHS | NIH | National Institute of Neurological Disorders and Stroke

Publisher

American Physiological Society

Subject

Physiology,General Neuroscience

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