|The Effects of Dynamic Spatial Hearing Rehabilitation Combined with Transcranial Electrical Stimulation on Speech Perception in Noise in Elderly Men: A Randomized Clinical Trial|
|Majid Ashrafi1,2, Mansoureh Adel Ghahraman1, Ghassem Mohammadkhani1, Shohreh Jalaie3, Hamed Sadjedi4|
|1Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
2Department of Audiology, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3Biostatistics, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
4Department of Electrical Engineering, Shahed University, Tehran, Iran
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Keywords : Elderly, Spatial hearing, Auditory rehabilitation, Transcranial electrical stimulation, Speech perception
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Objectives: Speech perception problem in noise is the most common complaint among elderly people. Previous studies have shown auditory training improves central auditory system plasticity in the elderly. The aim of the present study was to evaluate the effectiveness of the designed hearing rehabilitation program in overcoming this problem.
Materials and Methods: This randomized, controlled clinical trial was performed on 80 elderly people aged 60-75 years old that were randomly assigned to four equal groups. A group received only dynamic spatial hearing rehabilitation (ODSHR), a group received the dynamic spatial hearing rehabilitation combined with transcranial direct current stimulation (DSHRWTDCS), the control and sham groups. All participants were evaluated by behavioral and electrophysiological tests and a questionnaire before, after and one month after the end of the intervention.
Results: In the behavioral, electrophysiological tests and a questionnaire, there was a significant difference between the means of second and third stages with first stage in ODSHR and DSHRWTDCS groups. There was a significant difference between the means of the second and third stages in both ODSHR and DSHRWTDCS groups with the two other groups.
Conclusion: The positive effects of the spatial hearing rehabilitation program with tDCS are confirmed by various aspects of self-assessment, electrophysiological and behavioral tests, and can be the basis for developing comprehensive rehabilitation programs.
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