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. 2023 Apr;75(Suppl 1):83-87.
doi: 10.1007/s12070-022-03270-3. Epub 2022 Nov 9.

Evaluation of the Viability of Auditory Steady State Response Testing for Detection of Pseudohypacusis in Serving Personnel of the Indian Armed Forces

Dilip Raghavan  1 , Rahul Naga  2 , Arun Gupta  3 , Shazia Khan  2 , Nirbhesh Saxena  4 , Basavraj Patil  5
Affiliations

Evaluation of the Viability of Auditory Steady State Response Testing for Detection of Pseudohypacusis in Serving Personnel of the Indian Armed Forces

Dilip Raghavan et al. Indian J Otolaryngol Head Neck Surg. 2023 Apr.

Abstract

The most popular objective physiologic test for detecting hearing loss that is in use today is the ABR, however it is not frequency specific. The frequency specific tool available for evaluation of hearing is ASSR. The study is aimed to assess the ability of ASSR to estimate hearing thresholds and identify the ideal modulation frequency in hearing impaired personnel. All subjects and controls were subjected to PTA to determine presence/absence of hearing loss, and the nature and configuration of the hearing loss if any. The subjects were then subjected to ASSR testing to objectively ascertain hearing thresholds. The PTA thresholds obtained and the hearing thresholds obtained by ASSR were correlated in this study. The study was carried out in 100 subjects under the age of 50 years (50 with normal hearing & 50 with impaired hearing by PTA) after obtaining informed consent. Moderate correlation was found between PTA and ASSR thresholds only in certain frequencies while in other frequencies the correlation though present, was low. This study concluded that ASSR system could be used to estimate hearing thresholds only approximately as no significant linear correlations were found between PTA thresholds and ASSR at the tested frequencies.

Keywords: ABR; ASSR; PTA; Pseudohypacusis.

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Figures

Fig. 1
Fig. 1
Age distribution of study subjects (N-100)
Fig. 2
Fig. 2
Test Duration (N-100)
Fig. 3
Fig. 3
Pearson Correlation–PTA Vs. ASSR in Normal Hearing Individuals (N = 50)
Fig. 4
Fig. 4
Pearson Correlation–PTA Vs. ASSR in Subjects with Impaired Hearing by PTA > 25dBHL (N = 50)
See this image and copyright information in PMC

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