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Does hearing aid use affect audiovisual integration in mild hearing impairment?
Anja Gieseler1,2, Maike A S Tahden3,4, Christiane M Thiel3,5
1Cluster of Excellence 'Hearing4all', University of Oldenburg, Oldenburg, Germany. anja.gieseler@uni-oldenburg.de.
Experimental Brain Research
|February 18, 2018
Summary
Hearing aid use in older adults with mild hearing loss enhances audiovisual integration, potentially reversing negative effects of hearing impairment. This suggests benefits for auditory rehabilitation.
Area of Science:
- Auditory Neuroscience
- Human Perception
- Gerontology
Background:
- Mild hearing loss is common in the elderly and often untreated.
- Audiovisual integration is known to be altered in profound hearing loss and with cochlear implants.
- The impact of hearing aid use on audiovisual integration in mild hearing loss is largely unknown.
Purpose of the Study:
- To compare audiovisual integration strength in elderly hearing aid users versus non-users with mild hearing loss.
- To investigate the integration window duration in these groups.
- To understand the effects of habitual hearing aid use on multisensory processing.
Main Methods:
- Utilized the sound-induced flash illusion to measure audiovisual integration susceptibility.
- Varied stimulus onset asynchronies to determine the integration window.
- Tested hearing aid users unaided, controlling for audibility, to assess habitual use effects.
Main Results:
- Hearing aid users demonstrated significantly greater audiovisual integration than non-users.
- A wider temporal window of integration was observed in hearing aid users.
- Signal detection analysis suggested changes in both perceptual sensitivity and bias.
Conclusions:
- Habitual hearing aid use may enhance audiovisual integration in mild hearing loss.
- Hearing aid use might counteract the detrimental effects of hearing impairment on multisensory processing.
- Findings have implications for auditory rehabilitation strategies in the elderly.
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