Abstract: Identifying a vibrotactile perception threshold of different mechanoreceptors at a skin site of a subject by detecting sensory deficits in peripheral nerves and, in particular, those associated with neuropathy in the fingers or other parts of the body. Controlling and monitoring of the static dynamic contact force between the human skin site and a vibrating probe which transmits a frequency signal to a receiver for measuring the spatial position of the transmitted signal, whereby a human feedback device records the signal and adjusts for continuous contact force between the skin site and vibrating probe.