Document Detail

Response characteristics of cutaneous mechanoreceptors to vibratory stimuli in human glabrous skin.
MedLine Citation:
PMID:  7478256     Owner:  NLM     Status:  MEDLINE    
We investigated the responsiveness of mechanoreceptors in the glabrous skin of the hand to triangular vibratory stimuli when the frequency and applied pressure to the skin were varied. Using a microneurographic technique, 13 single afferent activities were recorded from 4 kinds of mechanoreceptors. Both fast-adapting (FA) and slow-adapting (SA) units were sensitive to the vibratory stimuli. The relationship between the most sensitive frequency and applied pressure to the skin were analyzed as a tuning curve. FA-type I (FAI) was sensitive to vibratory stimuli at 30-40 Hz and the frequency which entrained one-to-one discharge at lower pressure was between 10 and 80 Hz. FA-type II (FAII) sensitivity was augmented sharply over 60-100 Hz. SA-type I (SAI) and SA-type II (SAII) responsiveness was almost the same and characteristic sensitivity to the vibratory stimuli was revealed under 15 Hz. Functional roles of these units, especially type I units, are discussed in relation to active touch such as texture discrimination with a finger.
S Toma; Y Nakajima
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Neuroscience letters     Volume:  195     ISSN:  0304-3940     ISO Abbreviation:  Neurosci. Lett.     Publication Date:  1995 Jul 
Date Detail:
Created Date:  1995-12-18     Completed Date:  1995-12-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7600130     Medline TA:  Neurosci Lett     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  61-3     Citation Subset:  IM; S    
Department of Physiology, School of Medicine, Chiba University, Japan.
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MeSH Terms
Mechanoreceptors / physiology*
Neurons, Afferent / physiology
Physical Stimulation
Skin / innervation
Skin Physiological Phenomena*

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