The present invention comprises: an EEG measuring unit for measuring EEG signals when a subject is exposed to an amplitude-modulated sound; an EEG dividing unit for dividing the measured EEG signals into segments that are no longer than the modulation period of the amplitude-modulated sound; a degree of similarity calculating unit for calculating the degree of similarity in EEG signals between any two out of all segments; and an assessing unit for assessing auditory acuity on the basis of the distribution of the degree of similarity.
AUDITORY ACUITY TEST SYSTEM AND AUDITORY ACUITY TEST METHOD