In the long-term, with progression of the illness, Parkinson's disease dementia affects up to
90% of patients with Parkinson's disease. With increasing life expectancy in western …

Dual-task methodology has been increasingly used to assess cognitive motor interference
while walking. However, whether the observed dual-task-related gait changes are …

This study examined the contributions of verbal ability and executive control to verbal
fluency performance in older adults (n= 82). Verbal fluency was assessed in letter and …

Measures of phonemic and semantic verbal fluency, such as FAS and Animal Fluency
(Benton, Hamsher, & Sivan, 1989), are often thought to be measures of executive …

While there is a clear link between impairments of executive functions (EFs), ie cognitive
control mechanisms that facilitate goal-directed behavior, and speech problems, it is so far …

The purpose of the present study was to evaluate whether phonemic and semantic verbal
fluency were more related to aspects of language processing than executive functioning …

Abstract The Montreal Cognitive Assessment (MoCA) is a cognitive screening instrument
developed to detect mild cognitive impairment (MCI). It is a simple 10 min paper and pencil …

We have previously performed detailed clinical and neuropsychological assessments in a
community-based cohort of patients with newly diagnosed parkinsonism, and through …

Background Deep brain stimulation (DBS) of the subthalamic nucleus (STN) reduces motor
symptoms in patients with Parkinson's disease (PD) and improves their quality of life; …

Background Deep brain stimulation of the subthalamic nucleus (STN DBS) is an
increasingly common treatment for Parkinson's disease. Qualitative reviews have concluded …