J Audiol Otol.  2016 Dec;20(3):158-167. 10.7874/jao.2016.20.3.158.

Audiological Profile of Adult Persons with Auditory Neuropathy Spectrum Disorders

• Yuvaraj P
• Jayaram M

• KMID: 2361689
• DOI: http://doi.org/10.7874/jao.2016.20.3.158

Abstract

BACKGROUND AND OBJECTIVES
The auditory profile of a large number of persons with late onset auditory neuropathy spectrum disorder (ANSD) is recently described in the Indian context. The purpose of study was 1) to profile data on routine audiological parameters, cortical evoked potentials, and temporal processing, 2) to analyze the benefit from hearing aids for persons with ANSD, and 3) to understand the association between benefit from hearing aids and auditory profile.
SUBJECTS AND METHODS
Thirty-eight adults with late onset ANSD and a matched group of 40 normally hearing adults participated in the study. Basic audiological tests, recording of cortical evoked potentials, and temporal processing tests were carried out on both groups of participant while only persons with ANSD were fitted with hearing aid.
RESULTS
Subjects in the two groups were significantly different on all the audiological parameters. ANSD group seemed to benefit from hearing aids variably. The mean amplitude of N2 was significantly different between normally-hearing participants and patients with ANSD.
CONCLUSIONS
Residual temporal processing, particularly amplitude modulation detection seems to be associated with benefit from hearing aids in patients with ANSD.

Keyword

Auditory neuropathy spectrum disorder; Gap detection threshold; Temporal resolution; Amplitude modulation detection; Hearing aid benefit

MeSH Terms

Adult*
Evoked Potentials
Hearing
Hearing Aids
Humans
Research Design