A measurement device for measuring activity of the spinal cord of a vertebrate. The device includes at least one main probe (1) shaped to be fastened to a spinous process (2) of a vertebra (3) and to hold in position on opposite sides of the vertebra at least one emitter (6) for emitting a wave capable of interacting with the spinal cord (7) and at least one associated receiver (8) for receiving the wave that has interacted with the spinal cord and for generating a signal representative of the activity of the spinal cord.
