Vibration perception threshold (VPT) is an important method of quantitative sensory test (QST). It provides a fast, economic and accurate method for early detection of diabetic peripheral neuropathy (DPN) in clinical practice, and can early detect high-risk population with serious complications.
VPT is the minimum volt value of the corresponding vibration stimulation when the vibration stimulation can be clearly perceived by the patient. It is an important QST method to evaluate the conduction information of proprioceptive pathway caused by skin vibration stimulation. Like tactile and thermosensory, vibration sensation reflects specific neuroanatomical pathways based on discrete distribution of nerve fibers. Its nerve selectivity is reflected in the Aα and Aβ fibers of the medullated tip.
Digital vibration threshold test device can measure the function of myelinated sensory nerve fibers on the skin or mucous membrane of any part of the human body. VPT is used in the early diagnosis of nerve damage, and it is one of the daily sensory disorders diagnosis items in neurology, occupational medicine, diabetic foot prevention and treatment, male and femail sexual function and other diseases.