Abstract: To provide an analysis system for analysis of semicircular canal functions with rotational stimuli. The analysis system includes a vestibulo ocular reflex data-acquiring unit configured to acquire first vestibulo ocular reflex data and second vestibulo ocular reflex data. The first vestibulo ocular reflex data is acquired by dividing a rotation angle owing to a vestibulo ocular reflex with a rotation angle of a head position. The second vestibulo ocular reflex data is acquired by subtracting at least a rotation angle owing to catch-up saccades (CUS) from the rotation angle of the head position to determine a residual rotation angle, followed by dividing the residual rotation angle with the rotation angle of the head position. The analysis system is configured to analyze semicircular canal functions based on the second vestibulo ocular reflex data, or based on both the first vestibulo ocular reflex data and the second vestibulo ocular reflex data.