Pathological Studies in Perceptive Deafness Four Patients with Presbyacusis

Abstract

In patients with known perceptive hearing loss we have studied the pathological changes in the labyrinths and auditory pathways in the brain stem and hemispheres.

The patients were divided into two groups: one in which perceptive hearing loss was confined to the high frequencies, and another in which considerable hearing loss for low frequencies was associated with severe hearing loss for high frequencies.

We intend to discuss the pathological basis for the difference in hearing loss in the two groups of patients.