Speech Comprehension Difficulties in Chronic Tinnitus and Its Relation to Hyperacusis

Area of Science:

• Audiology
• Neuroscience
• Otolaryngology

Background:

• Tinnitus frequently co-occurs with speech comprehension difficulties, impacting quality of life.
• Underlying mechanisms and predisposing factors for these deficits remain poorly understood.
• Investigating these deficits is crucial for effective tinnitus management.

Purpose of the Study:

• To estimate the prevalence of speech comprehension difficulties in tinnitus patients.
• To compare subjective reports with objective behavioral measurements.
• To explore links between speech comprehension, peripheral hearing, and central auditory processing disorders like hyperacusis.

Main Methods:

• Assessed 361 tinnitus patients using standard audiological tests, including pure tone audiometry and tinnitus matching.
• Utilized the Goettingen sentence test for speech audiometry in quiet.
• Collected subjective data on hyperacusis and speech comprehension in quiet and noisy environments.

Main Results:

• 74.2% of patients exhibited disturbed speech comprehension.
• Subjective complaints correlated with hearing level and objective speech comprehension ability.
• Hyperacusis was linked to difficulties in noisy environments, not general comprehension deficits.

Conclusions:

• Speech comprehension deficits are prevalent in tinnitus patients.
• Deficits in quiet stem from peripheral hearing loss; deficits in noise involve central auditory processing.
• Central inhibitory deficits and cognitive factors may influence speech comprehension in noisy environments.