Figure 3: Brainstem evoked potentials recorded in response to click stimulation of the operative side ear during (A) exposure of the CP angle, (B) decompression of the trigeminal nerve, (C) upon closure of dura after trigeminal nerve decompression, and (D) after re-exploration of the CP angle and subsequent decompression of the cochlear nerve. Note that not only does the IV/V complex of the BAER disappear, but so do the earlier generated waves of the response.

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