Effects of local vibration transmitted from ultrasonic devices on vibrotactile perception in the hands of therapists.
作者： RONNIE LUNDSTRÖM
DOI: 10.1080/00140138508963199
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摘要: Nine ultrasonic therapists and nine controls have been studied with regard to vibration perception thresholds within the frequency range of 5–400 Hz. Thresholds on tip index middle finger for both left right hand were studied. In contrast controls, had exposed professionally local high frequencies, around 1 MHz, from handles transducers used therapy in medical service. For therapists, compared a reduction was seen. This result supports suspicion that frequencies might negative influence man.
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