AiiSH-iR

Narrow-band chirp and tone burst auditory brainstem response as an early indicator of synaptopathy in industrial workers exposed to occupational noise

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dc.contributor.author Kondli Nagaraj Megha
dc.contributor.author Koratagere Narayanaswamy Divyashree
dc.contributor.author Aishwarya Lakshmi
dc.contributor.author Sugathan Adithya
dc.contributor.author Kunnupurath Puthenveedu Keerthana
dc.contributor.author Zeena Venkatacheluvaiah Pushpalatha
dc.contributor.author Sreeraj Konadath
dc.date.accessioned 2022-01-31T11:01:32Z
dc.date.available 2022-01-31T11:01:32Z
dc.date.issued 2019
dc.identifier.issn 2186-361X
dc.identifier.uri https://doi.org/10.5582/irdr.2019.01073
dc.identifier.uri http://192.168.100.26:8080/xmlui/handle/123456789/3619
dc.description.abstract This study aims at characterizing and comparing the findings of auditory brainstem response (ABR) using narrow-band chirp (NB-chirp) and tone burst (TB) for both latency and amplitude parameters among those exposed to occupational noise and to determine which among the two serves as a better indicator of noise-induced cochlear neuropathy. Forty adult males in the age range of 20-35 years were considered, wherein 20 of them were exposed to noise > 80 dB (A) for 8 hours per day constituting Noise-exposed group; and Control group consisted of 20 individuals without occupational noise exposure. ABR was recorded using NB-chirp and TB for four frequencies at 80 dB nHL through Etymotic Research – 3A (ER-3A) Insert phones using Interacoustics Eclipse EP-25 in individuals with and without noise exposure. MANOVA was performed to compare between TB ABR and NB-chirp ABR between the two groups. Statistical analysis revealed a notable difference for NB-chirp comparisons between the two groups at three frequencies: 500 Hz, F(1, 38) = 10.6; 1000 Hz, F(1, 38) = 7.91; and 2000 Hz, F(1, 38) = 6.64. Whereas, the difference was evident at only 500 Hz: F(1, 38) = 4.98 in case of TB ABR. However, there was no significant difference seen at any of the frequencies for amplitude parameters in both TB and NB-chirp ABR. Latency of wave V using NB-chirp was considered to be a better indicator compared to TB, acting as a better clinical tool in early identification, diagnosis, and monitoring of noise induced hearing loss (NIHL).
dc.title Narrow-band chirp and tone burst auditory brainstem response as an early indicator of synaptopathy in industrial workers exposed to occupational noise
dc.type Article
dc.issueno 3
dc.journalname Intractable & rare diseases research
dc.pageno 179-186
dc.terms Auditory brainstem response, narrow band-chirp, tone burst, noise induced hearing loss, cochlear synaptopathy
dc.volumeno 8


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