PMID: 11898880Mar 20, 2002Paper

Dependence of vibrotactile thresholds on the psychophysical measurement method

International Archives of Occupational and Environmental Health
Miyuki Morioka, Michael J Griffin

Abstract

To investigate the dependence of vibrotactile thresholds on the psychophysical method used in the diagnosis of neurological dysfunction caused by exposure to hand-transmitted vibration. To compare thresholds obtained with (a) 'continuously variable' versus intermittent 'staircase' stimulation using 'yes-no' responses, and (b) 'yes-no' and 'forced-choice' responses using intermittent staircase stimulation. Vibrotactile thresholds were measured on 12 healthy men by three different psychophysical methods. All measurements were performed with the same vibrometer in which the vibratory stimulus was applied by a probe 6 mm in diameter that protruded through a hole of 10 mm diameter in a surround, controlling both the contact force and the push force. Four stimulus frequencies (16, 31.5, 63 and 125 Hz) were used to obtain responses from FAI and FAII mechanoreceptors. There was a 3 to 6 dB variation in threshold due to the psychophysical method: thresholds were lower with intermittent stimulation and thresholds obtained with the 'forced-choice' procedure were lower than those obtained with the 'yes-no' procedure. Alternative explanations of the findings were offered. The dependence of psychophysical measurement method on vibrotactile t...Continue Reading

Citations

Mar 17, 2009·Occupational Medicine·Lage BurströmTohr Nilsson
Mar 1, 2006·Somatosensory & Motor Research·Miyuki Morioka, Michael J Griffin
May 20, 2011·The Clinical Journal of Pain·Zheng ZhangMark Tommerdahl
May 1, 2009·The Annals of Occupational Hygiene·Lage BurströmTohr Nilsson
Mar 16, 2021·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Kristine Krajnak
May 12, 2015·Applied Ergonomics·Miyuki Morioka, Michael J Griffin
Mar 29, 2011·Journal of Hand Therapy : Official Journal of the American Society of Hand Therapists·Minu Shikha GandhiStacy J Morris Bamberg

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