Effects of signal intensity level and noise-simulated hearing loss on auditory language processing persons with aphasia

摘要

This study assessed the role of presentation level and high-frequency audibility in auditory processing of participants with aphasia (PWA). Performance of PWA was compared to non-brain-injured participants (NBIP) on the Computerized Revised Token Test (C-RTT) at varying signal intensity levels, and under normal and simulated hearing loss conditions. The PWA performed significantly more poorly than the NBIP under both conditions. Maximum performance required significantly higher presentation levels in the simulated hearing loss condition than in quiet; with similar gain and level requirements were observed for both groups. The results will be discussed relative to auditory language processing in PWA.