| Abstract: | Auditory test results and localizing neurological, radiological, surgical, and pathological findings are described in three cases representative of 14 patients with glioma in the temporal and parietal lobes of the brain. Low-pass filtered, alternate-binaural, simultaneous-binaural, and competing sentence discrimination tests yield abnormal scores in the ear contralateral to the affected hemisphere in patients with temporal lobe tumors. Patients with parietal lobe lesions may manifest abnormal auditory behavior from secondary involvement of the temporal lobe due to pressure, edema, or infiltration of tumor cells. In such instances, auditory functions seem to be less severely affected than in cases with primary temporal lobe tumor. Binaural resynthesis of low-band and high-band pass speech is abnormal with involvement of the brain stem. |
