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The effects of nature sounds and Quranic recitation on the MOCS as measured by TEOAE suppression

Amirullah, Nur Afiqah and Rahmat, Sarah and Dzulkarnain, Ahmad Aidil Arafat (2021) The effects of nature sounds and Quranic recitation on the MOCS as measured by TEOAE suppression. In: International Evoked Response Audiometry Study Group Biennial Symposium 2021, 14 Jun-9 Jul 2021, Virtual. (Unpublished)

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Background: Otoacoustic emission (OAE) suppression is among the tests used to measure the medial olivocochlear system (MOCS) function. Previous works have shown the effectiveness of BBN as a suppressor signals to activate the MOCS due to its large bandwidth (Kalaiah, Nanchirakal, Kharmawphlang & Noronah, 2017). However, the effects of broadband-like nature sounds and Quranic recitations as suppressor signals to activate the MOCS have yet to be investigated. The current study therefore aims to investigate the effects of nature sounds and Quranic recitation as suppressor signals on the MOCS activation as measured by suppression transient OAE (TEOAE) among children. Methods: 11 normal hearing school-age children (aged between 8-11) participated in this study. TEOAE suppressions were performed in the presence of contralateral BBN, three nature sounds (ocean, rain, and waterfall), and two Quranic recitations (Al-Fatihah and Yasin) at 60 dBA at 1,000, 1,400, 2,000, 2,800, and 4,000 Hz. The subjects’ attention states were kept constant by asking them to complete several working memory modules while the TEOAE suppressions were being measured. Results: A large effect size (partial eta squared, η2 = 0.14) was found between the TEOAE suppressions obtained at the 5 frequencies, indicating an effect of frequency. Further descriptive analysis showed larger TEOAE suppressions at 1,000 Hz and 1,400 Hz in 4 out of 6 suppressor signals. At 1,000 Hz, all 6 suppressor signals were as effective as one another at triggering the MOCS. At 1,400 Hz, a moderate effect size (η2 = 0.066), was observed for TEOAE suppressions obtained using the 6 suppressor signals, indicating that some suppressor signals were moderately more effective than others. The top 3 most effective suppressor signals – Waterfall (2.35 dB + 5.23), BBN (2.00 dB + 5.22), and Al-Fatihah (1.65 dB + 4.86) – were similarly effective in triggering the MOCS (indicated by small effect size, η2 = 0.016 for the comparison of TEOAE supression between the three noises). Conclusion: Waterfall sound and Al-Fatihah were as effective as BBN in activating the MOCS, as indicated by the amount of TEOAE suppressions obtained. Our findings suggest that nature sounds as well as Quranic recitations have the potential to be used as suppressor signals in future MOCS studies, as well as the stimulus to be used in sound therapy.

Item Type: Conference or Workshop Item (Poster)
Uncontrolled Keywords: MOCS, TEOAE suppression, nature sounds, Quranic recitation
Subjects: R Medicine > RF Otorhinolaryngology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Allied Health Sciences
Kulliyyah of Allied Health Sciences > Department of Audiology and Speech-Language Pathology
Depositing User: Prof Dr Ahmad Aidil Arafat Dzulkarnain
Date Deposited: 16 Jul 2021 17:29
Last Modified: 20 Apr 2022 08:42
URI: http://irep.iium.edu.my/id/eprint/90752

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