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Case Reports in Medicine
Volume 2012 (2012), Article ID 206716, 7 pages
http://dx.doi.org/10.1155/2012/206716
Case Report

Speech Processing Disorder in Neural Hearing Loss

1Department of Audiology, Kennedy Krieger Institute, 801 North Broadway, Baltimore, MD 21205, USA
2Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA

Received 4 September 2012; Revised 11 October 2012; Accepted 25 October 2012

Academic Editor: Dianne L. Atkins

Copyright © 2012 Joseph P. Pillion. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Deficits in central auditory processing may occur in a variety of clinical conditions including traumatic brain injury, neurodegenerative disease, auditory neuropathy/dyssynchrony syndrome, neurological disorders associated with aging, and aphasia. Deficits in central auditory processing of a more subtle nature have also been studied extensively in neurodevelopmental disorders in children with learning disabilities, ADD, and developmental language disorders. Illustrative cases are reviewed demonstrating the use of an audiological test battery in patients with auditory neuropathy/dyssynchrony syndrome, bilateral lesions to the inferior colliculi, and bilateral lesions to the temporal lobes. Electrophysiological tests of auditory function were utilized to define the locus of dysfunction at neural levels ranging from the auditory nerve, midbrain, and cortical levels.