Abstract

Communication in everyday acoustic environments is facilitated by the ability to locate, separate, and process speech from different locations. We do this by combining information received by both ears. Typically, the auditory system does not simply relay information delivered by both ears; rather, bilateral information is combined through elaborate binaural pathways in both the brainstem and cortex to allow us to communicate in complex acoustic environments. But traditionally it has been difficult to evaluate the subcortical underpinnings of speech communication using more complex, naturalistic continuous speech stimuli. Recently, the “peaky” speech method was created that uses stories to evoke brainstem responses using EEG. We have recorded brainstem responses from adults with normal hearing who listen to one or multiple narrators, and narrators coming from one or different perceived spatial locations. This talk will highlight the brainstem work undertaken towards creating subcortical measures of speech processing and spatial hearing.

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