Background: This study aimed to compare the neurophysiological responses to sound in adults with hypersensitivity compared to adults without hypersensitivity, and correlate the daily-life experiences to the neurophysiological manifestations. Material and Methods: The Adolescent/Adult Sensory Profile (AASP) was administered to 27 adults, separated by their cut-off scores. Differences in neurophysiological responses were measured by N 1 -P 2 Event-Related Potentials (ERP) in response to auditory changes in frequency and intensity. Reactions to daily sounds were measured by the hyperacusis questionnaire. Correlations between AASP, hyperacusis questionnaire, and ERP were measured. Results: The basic ability to detect a change in stimuli manifested in N 1 waveform was not significantly different. However, participants with hypersensitivity presented a stronger P 2 response and a higher hyperacusis score. Daily expressions of auditory hypersensitivity correlated ( p = 0.05 - p = 0.01) with larger ERP responses. Conclusions: Auditory hypersensitivity as reflected in daily scenarios is evident in neurophysiological manifestations measured by ERPs. Understanding the relationship between the neural mechanisms of auditory hyper-ensitivity and its daily expressions, may optimize participation and wellbeing for people with hypersensitivity.
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