Concentrated pitch discrimination modulates auditory brainstem responses during contralateral noise exposure

Neuroreport
Kazunari IkedaAkiko Hayashi

Abstract

This study examined a notion that auditory discrimination is a requisite for attention-related modulation of the auditory brainstem response (ABR) during contralateral noise exposure. Given that the right ear was exposed continuously with white noise at an intensity of 60-80 dB sound pressure level, tone pips at 80 dB sound pressure level were delivered to the left ear through either single-stimulus or oddball procedures. Participants conducted reading (ignoring task) and counting target tones (attentive task) during stimulation. The oddball but not the single-stimulus procedures elicited task-related modulations in both early (ABR) and late (processing negativity) event-related potentials simultaneously. The elicitation of the attention-related ABR modulation during contralateral noise exposure is thus considered to require auditory discrimination and have the corticofugal nature evidently.

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Citations

May 28, 2010·Neuroreport·Kazunari IkedaTakahiro Sekiguchi
Jun 16, 2016·Frontiers in Computational Neuroscience·Chagit S ReichenbachTobias Reichenbach

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