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. 1992 Apr;449:503–515. doi: 10.1113/jphysiol.1992.sp019099

The perceptions of force and of movement in a man without large myelinated sensory afferents below the neck.

J D Cole 1, E M Sedgwick 1
PMCID: PMC1176092  PMID: 1522522

Abstract

1. Motor memory and the sense of effort have been investigated in a man with a complete large fibre sensory neuropathy for over 16 years. The perceptions of pain, heat, cold and muscular fatigue remained but he was without perceptions of light touch and proprioception below the neck. 2. The subject was able to discriminate weights held in the hand with an accuracy only slightly worse than control subjects (20 g in 200 g) when forearm movement and visual inspection were allowed. With eyes shut however he could only distinguish a weight of 200 g from 400 g. It is concluded that a crude sense of effort remains which may have a peripheral origin. 3. A limited motor memory was also present, which allowed him to maintain a posture or continue a simple repetitive movement. No novel movement was possible without visual feedback. 4. Differences in movement ability between this subject and others with similar if less pure sensory neuropathies are ascribed to rehabilitation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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