Hyperacusis, Autonomous Regulation and Executive Functioning : Effects of noise exposure over time

Sammanfattning: Hyperacusis is a condition in which sufferers experience everyday sounds in their surroundings as unmanageable and disturbing. The condition is often associated with symptoms such fatigue, headaches, sleep disturbances and difficulties concentrating. Present study aimed to investigate how people are affected when exposed to noise over time. This was operationalized by collecting data from essentially three domains; subjective, physiological and cognitive. Since hyperacusis is largely defined by the individuals’ subjective experience, participants were divided into three groups based on their own subjective reports of discomfort during an exposure to white noise (60db). Cognitive performance was assessed using two well established measurements in the beginning and the end of the exposure session. Contrary to expectations, the groups did not differ significantly in cognitive performance. Heart rate variability was measured during the exposure session and was hypothesized to be lower in participants experiencing higher discomfort. As expected, the groups differed in their expressed variability in the direction of the hypothesis.