Abstract: The invention relates to a method to design and generate frequency-specific electrical or acoustical stimuli for the recording of auditory steady-state responses, ASSR, from human individuals, where the stimuli are generated as a combination of a series of three or more spectral components (i.e. pure tones), each having a specified frequency, amplitude and phase and where the frequency difference between the successive pure tones in the series preferably is constant=fs. The invention further relates to a device for detection of ASSR and to a software program for use in such device.

Abstract: The invention relates to a device for determining acoustically evoked brain potentials in objective audiometry from electrodes applied to the head of a subject, where the device comprises a plurality of electrodes, i.e. at least one pickup electrode and a reference electrode, to be applied at different points of the head, where the electrodes are mounted on a structure in fixed positions in relation to each other, where the structure comprises at least one flexible cushion abutting the head of the subject around an ear, where the pickup electrode and the reference electrode are integrated in the flexible cushion.