Supplemental Digital Content 2. Brainstem auditory evoked potentials with left ear (A) and right ear (B) stimulation in relation to our first case and the MRI shown in figure 1. The top trace in each figure represents the ipsilateral ear - Cz derivation,
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Supplemental Digital Content 2. Brainstem auditory evoked potentials with
left ear (A) and right ear (B) stimulation in relation to our first case and the MRI shown
in figure 1. The top trace in each figure represents the ipsilateral ear -Cz derivation,
the middle trace is ipsilateral - contralateral ear, and the bottom trace is contralateral
ear – Cz. The left ear responses are within normal limits, but right ear stimulation
resulted in abnormal waveform morphologies. Sweep was 1 msec/division, sensitivity
was 0.05 uV/division. Cervical vestibular evoked potentials from our first case.
(C) and (D) represent the responses from stimulating the left and right ear respectively.
The bottom traces represent the parallel recording or rectified EMG from the same
recording electrodes on the left (E) and on the right (F). The cVEMPs were within
normal limits bilaterally. For the cVEMPs, the sweep was 5 msec/division, sensitivity
was 5 uV/division. For the rectified EMG activity, the sweep was 2 msec/division and
the sensitivity was 20 uV/division. A high background level of muscle activity is
superimposed on the cVEMP response, more than usual when compared to figures
4 and 6, as this patient had difficulty in maintaining sternocleidomastoid muscle