A system for acquiring and processing the nystagmus signals of rat in rotational dizziness state in order to analyze the cause of dizziness and evaluating the curative effect of medicine to dizziness is composed of a horizontal motor, an arc arm fixed to output shaft of said motor, a spherical cage with upper and lower supporting rods connected to both ends of said arc arm, a rat bed in the horizontal center of said spherical cage, a camera installed on said rat bed, and a signal receiving and processing device connected to said camera in wireless mode. |