Auditory Brainstem Response Patterns in Misophonia: A Comparative Study
Abstract
Background and Aim: Misophonia is a condition characterized by a reduced tolerance to certain sounds or the stimuli linked to those sounds. Our study aimed to investigate the auditory brainstem functioning using electrophysiological measures in normal-hearing individuals with and without misophonia.
Methods: Thirty participants aged between 18 and 30 years were recruited. They were divided into two primary groups: fifteen individuals diagnosed with misophonia and fifteen controls. The selection of participants with misophonia was based on the diagnostic criteria by Schröder et al. and the MisoQuest questionnaire; Auditory Brainstem Response (ABR) was recorded from all the individuals at lower (11.1/s) and higher stimulus rates (90.1/s).
Results: On analysing the data, individuals with misophonia showed significantly shorter absolute latencies of ABR waves III and V at 11.1/s. Also, there was no significant difference in the absolute amplitude of ABR waves at 11.1/s and 90.1/s between the individuals with and without misophonia.
Conclusion: This study indicates that the shorter absolute latencies of ABR waves III and V in individuals in misophonia could be attributed to hyperactivity at the sub-cortical pathway regions compared to the control group.
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Misophonia auditory brainstem response hyperactivity |
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