Using Alpha-Band Power to Evaluate Hearing Aid Directionality Based on Multistream Architecture.

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.