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Differences in lingual vibrotactile thresholds of sensitivity using adjusted vs fixed methods of vibrator
D Fucci1, L Petrosino, G Underwood
1School of Hearing & Speech Sciences, Ohio University, Athens 45701.
Abstract:
The purpose of this study was to compare lingual vibrotactile thresholds of sensitivity obtained using individual subject adjustments of vibrator probe-contractor to lingual surface, with thresholds obtained using a fixed vibrator probe-contactor position across 30 subjects ranging in age from 18 to 26 yr. (M age = 20 yr.). Analysis showed minor (less than 5 dB SPL) differences in lingual vibrotactile thresholds of sensitivity between the two methods of vibrator probe-contactor alignment. For research purposes, the vibrator probe-contactor assembly should be adjusted to each individual's lingual surface, but for clinical-behavioral purposes, it might be sensible to use a fixed vibrator probe-contactor position across subjects, especially when performing research on young children, older adults, and the communicatively handicapped.