DIPOLE TRACING METHOD ANALYSIS FOR SOURCE OF AUDITORY BRAINSTEM RESPONSE (WAVE V) IN TWO NORMAL HEARING SUBJECTS

Abstract

The location and vector moment of the equivalent current dipoles of ABR (wave V) evoked by unilateral acoustic stimuli were estimated in normal adults with the Dipole Tracing (DT) Method. The ABR's were recorded through 21 electrodes arranged according to the international 10-20 standard. The DT method is based on a realistic head shape with uniform volume conductor and individual differences of the skull were corrected for afterwards. The 3-D dipole locations were plotted on the cross-sectional MRI data of the subject. As a result the dipole of the wave V of auditory brainstem responses was found near the contralateral midbrain.