Abstract
The performance of three groups of patients with central auditory pathology including subjects with lesions localized to the right temporal lobe, left temporal lobe, and eighth nerve was compared using three psychophysical tasks. These included detection, frequency discrimination, and duration discrimination. Speech perception was measured using the Four Alternative Auditory Feature Test. The patients were compared to a group of age‐matched normal control subjects and hospitalized control subjects. Except for patients with acoustic neuromas, all subjects had normal hearing acuity. Performance deficits relative to normal were dependent on site of brain lesion, verified by CT and/or MRI scans. The relationship between the processing of frequency and duration and speech perception will be discussed. [Work supported by the Medical Research Council and National Sciences and Engineering Research Council.]
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