Beyond the Auditory System: Sensory Processing in Decreased Sound Tolerance Disorders.

Area of Science:

• Neuroscience
• Audiology
• Sensory Integration

Background:

• Decreased sound tolerance (DST) encompasses conditions like hyperacusis, phonophobia, and misophonia.
• Sensory Processing Disorder (SPD) affects how the brain interprets sensory information.
• The relationship between DST and broader sensory processing challenges requires further investigation.

Purpose of the Study:

• To examine the correlation between decreased sound tolerance disorders and sensory processing disorder.
• To identify which sensory systems are impacted in individuals with DST.

Main Methods:

• 315 adults (18-35) with normal hearing completed the Decreased Sound Tolerance Disorder Scale (DSTS) and Adult Sensory Processing Scale (ASPS).
• Participants were categorized into study (DST present, n=278) and control (no DST, n=37) groups.
• Statistical analysis explored correlations between DSTS and ASPS scores.

Main Results:

• A moderate positive correlation was observed between ASPS total scores and hyperacusis (r=0.260) and misophonia (r=0.348).
• Individuals with misophonia scored higher on the ASPS than those without.
• DST was prevalent, with 35.9% experiencing all three types (triple DST).

Conclusions:

• Individuals with decreased sound tolerance may exhibit broader sensory processing difficulties.
• These difficulties extend beyond auditory processing to include visual, vestibular, proprioceptive, and tactile systems.
• Findings suggest a potential link between DST and multi-sensory integration challenges.