Abstract: An apparatus for measuring the sensitivity of the subject to a perception of a vibration comprises a vibration emitter, a signal device which can be activated by the subject as a perception threshold is cross, and an electronic processing unit which includes devices for storing the frequency and level of vibration of each crossing, a device for controlling the frequency and level of vibration, a device for exploring a reference frequency level by a frequency scan and a device for searching the perception threshold corresponding to the vibration levels different from the reference level, by a series of iterative frequency scans carried out starting from a zone of non-perception and ending towards either a high frequency or a low frequency as soon as the perception threshold is reached.