A Characterization of Central Auditory Processing in Parkinson's Disease

Area of Science:

• Neuroscience
• Audiology
• Clinical Neurology

Background:

• Inconsistent findings exist regarding auditory processing challenges in people with Parkinson's disease (PwPs).
• Standardized hearing assessments are needed to clarify auditory impacts and their relation to motor and non-motor symptoms in PwPs.

Purpose of the Study:

• To characterize auditory processes in PwPs using standardized measures.
• To investigate the relationship between auditory, cognitive, and clinical variables in PwPs.

Main Methods:

• Utilized the digital PART platform for standardized auditory assessments.
• Included 44 PwPs and 54 healthy controls.
• Assessed various auditory measures including frequency modulation, temporal gaps, and speech-on-speech masking.

Main Results:

• No significant differences in auditory processing were found between PwPs and controls.
• Auditory processing composite scores in PwPs correlated with cognitive measures (r=0.39-0.41).
• Auditory processing correlated with motor severity, quality of life, depression, and caretaker burden in PwPs (r=0.33-0.52).

Conclusions:

• Larger studies are needed to confirm auditory differences in PwPs.
• Auditory processing is an important consideration within the symptomatic spectrum of Parkinson's disease.
• Standardized, replicable methodologies are crucial for studying auditory function in PwPs.