Patients with Parkinson's disease have a number of specific visual disturbances. These
include changes in colour vision and contrast sensitivity and difficulties with complex visual …

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 …

The differential diagnosis of parkinsonian syndromes is considered one of the most
challenging in neurology and error rates in the clinical diagnosis can be high even at …

The purpose of this work was to evaluate changes in the connectivity patterns of a set of
cognitively relevant, dynamically interrelated brain networks in association with cognitive …

Graph‐theoretical analyses of functional networks obtained with resting‐state functional
magnetic resonance imaging (fMRI) have recently proven to be a useful approach for the …

Background Parkinson's disease (PD) is a chronic neurodegenerative disorder
characterized by bradykinesia, tremor, and rigidity among other symptoms. With a 70 …

Cognitive impairment (CI) is a common nonmotor complication of Parkinson's disease (PD),
and is associated with significant disability for patients and burden for caregivers. Similar to …

Objectives: Our aim was to assess cortical thickness in a large multicenter cohort of drug-
naive patients with early Parkinson disease (PD), with and without mild cognitive impairment …

Noninvasive brain imaging methods provide useful information on cerebral involution and
degenerative processes. Here we assessed cortical degeneration in 20 nondemented …

Visual symptoms are common in PD and PD dementia and include difficulty reading, double
vision, illusions, feelings of presence and passage, and complex visual hallucinations …