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E-ISSN : 2148-9696
Crescent Journal of
Medical and Biological Sciences
Jan 2020, Vol 7, Issue 1
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Original Article
The Effects of Spatial Auditory Training on Speech Perception in Noise in the Elderly
Yones Lotf1, Zhaleh Samadi-Qaleh-Juqy1, Abdollah Moosavi2, Hamed Sadjedi3, Enayatollah Bakhshi4
1Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
2Department of Otolaryngology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
3Department of Electrical Engineering, Shahed University, Tehran, Iran
4Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran

CJMB 2020; 7: 40–46

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Keywords : Aging, Auditory training, Speech perception
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Abstract

Objectives: Studies have shown that spatial processing disorders can be the reason for hearing impairment in the elderly but none of the auditory training programs has addressed it. This study investigated the effect of a novel auditory training on speech perception in noise among the elderly and its maintenance.

Materials and Methods: The spatial versions of the Persian quick speech in noise (QuickSIN) test were developed and its face validity and reliability were evaluated. Thirty-six old subjects with normal hearing ability who expressed problem in speech perception were randomly divided into the study and control groups. The study group received 5 weeks of spatial auditory training. The spatial versions of the QuickSIN test, and Iranian version of the speech, spatial, and qualities of hearing scale (SSQ), as well as the middle latency response (MLR) test were done pre and post training. The same evaluations were carried out for the control group without training.

Results: Test-retest reliability and face validity of the spatial versions of Persian QuickSIN test were confrmed. Signal to noise ratio for 50% correct score (SNR50) signifcantly decreased and spatial release from masking (SRM) and binaural interaction component of MLR percentage (BIC-MLR%) signifcantly increased. The average scores of SSQ improved in all the three domains. These changes, except for BIC-MLR and SNR50a had short-term maintenance.

Conclusions: Spatial auditory training can improve speech perception in noise by enhancing the representation of binaural cues at the thalamocortical level. Spatial hearing evaluation and training are recommended to be incorporated into audiology services for serving the geriatric population.

 

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