The effects of cumulative lifetime noise exposure on ascending auditory pathway function in audio metrically normal individuals is explored by sustained and transient fMRI responses and related auditory brainstem response (ABR). The experiment included continuous (scanner noise) and deviant noise (additional pink noise) levels that affected mental workload and auditory/visual attention. Our results exhibited reduced attention and mental workload in central auditory regions in people exposed to higher noise (>85dBA) in comparison with those exposed to lesser noise (<85dBA).
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