Source model of magnetic fields of auditory evoked brainstem responses.
S. Ueno, Keiji Iramina, K. Maekawa, K. Harada, Shinichi Wada, Shigeaki Matsuoka · Journal of the Magnetics Society of Japan · 1988
The origins of auditory evoked brainstem responses (ABRs) are not fully understood. In the present study we investigate a possible mechanism for ABR. A source model of ABR is proposed which simulates, in part, ABR waveforms. Pathways of auditory nerves are represented by a combination of five or six straight lines. Based upon that simple pathway model, the waveforms and spatial distributions of electrical potentials and magnetic fields are simulated. The results show that electrical potentials change with the orientation of the dipole. The spatial patterns of electrical potentials and magnetic fields also vary with the change of dipole direction. The spatial patterns of calculated potentials simulate well the contour maps of wave V in measured ABR.