Sentence comprehensionin Parkinson's disease.

Area of Science:

• Linguistics
• Neurology
• Psychology

Background:

• Parkinson's disease (PD) is associated with cognitive impairments, including difficulties in syntactic comprehension.
• While dementia in PD clearly impacts language, non-demented PD patients also exhibit challenges with complex sentence processing.

Purpose of the Study:

• To evaluate syntactic comprehension in non-demented idiopathic Parkinson's disease patients.
• To compare the performance of PD patients with that of age and education-matched healthy elderly controls.

Main Methods:

• Oral sentence comprehension was assessed in 14 idiopathic PD patients and 14 controls.
• The Token Test and Schmitt's Syntactic Comprehension Test (Brazilian Portuguese) were utilized.

Main Results:

• No significant difference was found between groups on the Token Test.
• A statistically significant difference emerged on Schmitt's Syntactic Comprehension Test, specifically for relative clauses in subject clauses (p=0.0407).

Conclusions:

• Non-demented PD patients demonstrated impaired oral comprehension solely for relative subject sentences compared to controls.
• Findings suggest a need for developing diverse Portuguese syntactic tests to accurately assess language comprehension in Brazilian PD populations.