The objective of this study was to assess the temporal relationship between changes in
predominant motor symptoms and incident dementia in Parkinson's disease (PD). A …

Background Cognitive impairment is a common nonmotor manifestation of Parkinson's
disease, with deficits ranging from mild cognitive difficulties in 1 or more of the cognitive …

The objective of this study was to identify different cognitive phenotypes in Parkinson's
disease (PD) using a data‐driven approach. A model‐based cluster analysis was conducted …

Objective: To determine progression and prognostic factors of progression rate of motor
impairment, disability, and quality of life (QoL) in patients with newly diagnosed Parkinson's …

Background The objectives of this study were to investigate progressive cortical thinning and
volume loss in Parkinson's disease (PD) patients with different longitudinal patterns of …

Abstract Background Subjective cognitive complaints (SCCs) in Parkinson's disease (PD)
are reported frequently, but their prevalence and association with changes on objective …

Background Cognitive impairment is a frequent and disabling feature of Parkinson's
disease. Identifying the factors able to predict cognitive worsening since the early stage may …

Background The optimal properties of a comprehensive (level II) neuropsychological battery
for determining Parkinson's disease mild cognitive impairment (PD‐MCI) by Movement …

There is some evidence that mild parkinsonian signs (MPSs) are associated with increased
risk of dementia, suggesting that MPS could be an early biomarker for dementia. Our aims …

We studied the relationship between two screening cognitive measures and off motor
Unified Parkinson's Disease Rating Scale (UPDRS) scores in 108 Parkinson's disease …