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Thresholds for the perception of hand-transmitted vibration: dependence on contact area and contact location

Thresholds for the perception of hand-transmitted vibration: dependence on contact area and contact location
Thresholds for the perception of hand-transmitted vibration: dependence on contact area and contact location
The detection of vibration applied to the glabrous skin of the hand varies with contact conditions. Three experiments have been conducted to relate variations in the perception of hand-transmitted vibration to previously reported properties of tactile channels. The effects of a surround around the area of contact, the size of the area of contact, the location of the area of contact, the contact force, and the hand posture on perception of thresholds were determined for 8–500?Hz vibration. Removal of a surround around a contact area on the fingertip elevated thresholds of the NP II channel (FA I fibres) at frequencies less than 31.5?Hz and reduced thresholds of the Pacinian channel (FA II fibres) at frequencies greater than about 63?Hz. When no surround was present, thresholds reduced systematically as the contact area increased from the fingertip to the whole hand at frequencies from 16 to 125?Hz, although the decrease was not inversely proportional to the increase in contact area. The results are partly explained by spatial summation in the Pacinian channel (FA II fibres) and the involvement of the NP II channel (SA II) with some influence of biodynamic responses and contact pressures. There were regional differences in sensitivity over the hand within the NP I channel but not within the Pacinian channel: the NP I thresholds (less than 31.5?Hz) decreased from proximal to distal regions of the hand, whereas the Pacinian thresholds (125?Hz) were independent of contact location over the hand.
perception, receptors, absolute perception threshold, hand-transmitted vibration
0899-0220
281-297
Morioka, Miyuki
8eb26aca-8773-4e45-8737-61c2438d30d9
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Morioka, Miyuki
8eb26aca-8773-4e45-8737-61c2438d30d9
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8

Morioka, Miyuki and Griffin, Michael J. (2005) Thresholds for the perception of hand-transmitted vibration: dependence on contact area and contact location. Somatosensory & Motor Research, 22 (4), 281-297. (doi:10.1080/08990220500420400).

Record type: Article

Abstract

The detection of vibration applied to the glabrous skin of the hand varies with contact conditions. Three experiments have been conducted to relate variations in the perception of hand-transmitted vibration to previously reported properties of tactile channels. The effects of a surround around the area of contact, the size of the area of contact, the location of the area of contact, the contact force, and the hand posture on perception of thresholds were determined for 8–500?Hz vibration. Removal of a surround around a contact area on the fingertip elevated thresholds of the NP II channel (FA I fibres) at frequencies less than 31.5?Hz and reduced thresholds of the Pacinian channel (FA II fibres) at frequencies greater than about 63?Hz. When no surround was present, thresholds reduced systematically as the contact area increased from the fingertip to the whole hand at frequencies from 16 to 125?Hz, although the decrease was not inversely proportional to the increase in contact area. The results are partly explained by spatial summation in the Pacinian channel (FA II fibres) and the involvement of the NP II channel (SA II) with some influence of biodynamic responses and contact pressures. There were regional differences in sensitivity over the hand within the NP I channel but not within the Pacinian channel: the NP I thresholds (less than 31.5?Hz) decreased from proximal to distal regions of the hand, whereas the Pacinian thresholds (125?Hz) were independent of contact location over the hand.

Text
14554 Morioka+Griffin 2005 Thresholds_for_hand_vibration - contact_area_and_location - Accepted Manuscript
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More information

Published date: 2005
Keywords: perception, receptors, absolute perception threshold, hand-transmitted vibration
Organisations: Institute of Sound & Vibration Research

Identifiers

Local EPrints ID: 28546
URI: http://eprints.soton.ac.uk/id/eprint/28546
ISSN: 0899-0220
PURE UUID: 5b1a4987-c7f0-4611-a947-0357b21215d2
ORCID for Michael J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

Catalogue record

Date deposited: 28 Apr 2006
Last modified: 15 Mar 2024 07:25

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Contributors

Author: Miyuki Morioka
Author: Michael J. Griffin ORCID iD

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