Speech perception performance in challenging listening environments declines with age and is particularly impaired in Parkinson's disease, leading to communication difficulties and cognitive strain. Although peripheral hearing loss contributes to these deficits, dysfunction of the central cholinergic system may play a key role. Parkinson's disease is characterized by early and widespread cholinergic degeneration....
✦ The floor
Discussion
Signed responses from readers of the wire.
No actionable change at this time — findings are mechanistic and require replication before influencing audiological management of Parkinson's patients.
Understanding the neurological basis of speech-in-noise deficits in Parkinson's disease could eventually guide targeted rehabilitation or pharmacological strategies beyond conventional amplification.
- 01Parkinson's disease is associated with impaired speech-in-noise understanding beyond peripheral hearing loss.
- 02The cholinergic system is implicated as a contributor to these central auditory processing deficits.
- 03Findings suggest the deficit may have a neurochemical rather than purely audiological origin.
- 04Results could inform future research into cognitive-audiological rehabilitation in Parkinson's.
- 05Published in Brain Communications (Oxford).
Cholinergic system dysfunction contributes to speech-in-noise processing deficits in Parkinson's disease.
studypartially supported- PMID
- 42936238
- DOI
- 10.1093/braincomms/fcag384.
- Journal
- Brain Communications
- Publication type
- research_article
- Evidence level
- 4
- Population
- Individuals with Parkinson's disease experiencing speech-in-noise processing difficulties
- Intervention
- Assessment of cholinergic system contributions to speech-in-noise processing
Primary outcomes
Speech-in-noise processing performance; Cholinergic system activity measures