Using Alpha-Band Power to Evaluate Hearing Aid Directionality Based on Multistream Architecture.
Purpose: The aim of the study was to evaluate whether behavioral speech-in-noise (SiN) benefits of hearing aid directivity based on multistream architecture (MSA) might result in reduced electroencephalographic activity in the alpha-band, as is often associated with task difficulty. Method: A single...
| Publicado en: | American Journal of Audiology Vol. 33; no. 4; pp. 1164 - 1176 |
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| Autores principales: | , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
American Speech-Language-Hearing Association
Dec2024
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=181326036&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 181326036 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10590889 5KS jtl: American Journal of Audiology issn: 10590889 maglogo: N pubinfo: dt: Dec2024 vid: 33 iid: 4 pid: 42 pub: American Speech-Language-Hearing Association place: Rockville, Maryland artinfo: ui: 181326036 181326036 181326036 10.1044/2024_AJA-24-00117 181326036 ppf: 1164 ppct: 12 formats: fmt: @attributes: type: P tig: atl: Using Alpha-Band Power to Evaluate Hearing Aid Directionality Based on Multistream Architecture. aug: au: Slugocki, Christopher Kuk, Francis Korhonen, Petri affil: Office of Research in Clinical Amplification (ORCA-USA), WS Audiology, Lisle, IL sug: subj: Hearing Aids Electroencephalography Speech Perception Task Performance and Analysis Human Male Female Middle Age Aged Aged, 80 and Over Single-Blind Studies Multiple Linear Regression Noise Adverse Effects Auditory Perception Behavioral Research Signal Processing, Computer Assisted Methods Algorithms Descriptive Statistics Comparative Studies Confidence Intervals Middle Aged: 45-64 years Aged: 65+ years Aged, 80 & over Male Female ab: Purpose: The aim of the study was to evaluate whether behavioral speech-in-noise (SiN) benefits of hearing aid directivity based on multistream architecture (MSA) might result in reduced electroencephalographic activity in the alpha-band, as is often associated with task difficulty. Method: A single-blind within-subject design was used in this study. Thirteen older adults (Mage = 73.5 years, range: 62--82 years, six women) with sensori-neural hearing loss participated in the study. Participants wearing study hearing aids first performed an adaptive sentence-level SiN test in an MSA-enabled condition (i.e., MSA-ON) to determine the signal-to-noise ratios (SNRs) corresponding to speech reception thresholds for 50% correct performance (i.e., SRT-50s). Participants were then tested at their individualized SNRs with target sentences alternating on each trial between two loudspeakers positioned in the front at 0° and -30° azimuth, such as to simulate turn-taking between two talkers seated across from the listener. Electroencephalographic activity was recorded as participants performed this SiN test in two hearing aid conditions: MSA-OFF and MSA-ON. Results: Neural oscillations in the alpha-band were significantly reduced over centroparietal electrode sites when listeners performed SiN testing in MSA-ON versus MSA-OFF conditions. Alpha-band power was also observed to increase significantly over the course of 60 test trials, possibly indicative of listener fatigue. Reductions in alpha-band power were not significantly related to likewise improvements in SiN performance. Conclusions: Hearing aid directivity based on the MSA algorithm resulted in significantly lower neural activity associated with listening task difficulty in a simulated multitalker situation. Although these results align with the behavioral SiN improvements associated with MSA, magnitudes of change in alpha-band power did not correlate with the degree of behavioral benefit at the level of individual listeners. Measuring neural oscillations in the alpha-band might be useful for evaluating and gaining greater insight into the impact of hearing aid processing on listening effort in challenging acoustic environments. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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