Diffusion tensor imaging and MR morphometry of the central auditory pathway and auditory cortex in aging
Abstract
We used MR morphometry and diffusion tensor imaging (DTI) with a 3T MR system with the aim to study the state of the central auditory system in a group of elderly subjects (>65years) with mild presbycusis, in a group of elderly subjects with expressed presbycusis and in young controls. Almost all of the measured parameters were significantly smaller in the elderly subjects in Heschl's gyrus, planum temporale and gyrus frontalis superior. Aging did not change the side asymmetry (laterality) of the gyri. The results suggest that in addition to peripheral changes, changes in the central part of the auditory system in elderly subjects are also present.