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Vibrotactile Perception Meter

Vibrotactile Perception Meter

The HVLab Vibrotactile Perception Meter follows our popular HVLab Tactile Vibrometer and has been developed through pioneering research in the Institute of Sound and Vibration Research at the University of Southampton. The HVLab Vibrotactile Perception Meter provides computer-controlled measurements of tactile thresholds for vibration stimuli at any location on the body. Thresholds are used to indicate sensorineural dysfunction. The instrument allows tests to be conducted according to ISO 13091-1:2001.


The HVLab Vibrotactile Perception Meter may be used for the assessment of sensory changes associated with neurological dysfunction. The equipment is used in medical, industrial, research, and educational establishments for health surveillance, medical diagnosis, and fundamental research.
Applications include:


The HVLab Vibrotactile Perception Meter system consists of an applicator, a control unit, a computer interface, a patient response button, a temperature probe, and software. 
An electrodynamic vibrator is used to drive a vibrating probe housed within the applicator. The probe protrudes through a circular hole in a height adjustable plate. The force exerted by the patient's finger on the surrounding plate is measured using strain gauges and feedback is provided by a force meter on the control box. The instrument also provides a means of measuring finger skin temperaure. 
The diagnostic software controls and measures the sinusoidal vibration stimulus. The magnitude of the vibration is increased until the patient depresses the response button. The vibration magnitude is then decreased until the patient releases the response button. An automatic test programme repeats this process a number of times to establish threshold levels for perception of different frequencies of vibration. The technique is similar to that used by automatic recording audiometers.

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