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Assessment of impaired tactile sensation: A pilot study
Anthony J Brammer, Joseph E Piercy and Pierre L Auger
Scandinavian Journal of Work, Environment & Health
Vol. 13, No. 4, Stockholm Workshop 86: Symptomatology and diagnostic methods in the hand-arm vibration syndrome: Hässelby Castle, Stockholm, 21—23 May 1986 (August 1987), pp. 380-384
Published by: the Scandinavian Journal of Work, Environment & Health, the Finnish Institute of Occupational Health, the Danish National Research Centre for the Working Environment, and the Norwegian National Institute of Occupational Health
Stable URL: http://www.jstor.org/stable/40965487
Page Count: 5
You can always find the topics here!Topics: Fingers, Sensory perception, Sense of touch, Vibration, Hands, Hypesthesia, Somatosensory perception, Perception tests, Low frequencies, Neurologic manifestations
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Three methods are compared for assessing impaired tactile sensation in vibration-exposed workers: a medical examination including traditional neurological tests and refined measures of vibrotactile perception and gap detection. Of 18 subjects only 12 were judged free of confounding factors — five forestry workers exposed to chain-saw vibration, aged 28 (SD 5) years, and seven laboratory workers not exposed to vibration, aged 36 (SD 7) years. Each method identified the same subject as suffering the most from tactile impairment, but they differed in their ranking of the severity of sensory changes. The ranking by gap detection and vibrotactile perception at low frequencies was the most consistent [Spearman rank correlation coefficient (r) = 0.90]. The clinical results, when staged according to the neurological component of vibration-induced white finger, ranked the thresholds for gap detection and low-frequency vibrotactile perception equally well (r = 0.70). In contrast, the Taylor-Pelmear staging of the clinical results poorly represented the ranking of tactile thresholds recorded for these workers (r = 0.00 and — 0.20, respectively). It also appeared that improved techniques for measuring vibrotactile and gap perception thresholds can detect sensory changes in the fingers not consistently found by conventional clinical tests.
Scandinavian Journal of Work, Environment & Health © 1987 Scandinavian Journal of Work, Environment & Health