Cognitive decline is one of the most frequent and disabling nonmotor features of Parkinson's
disease. Around 30% of patients with Parkinson's disease experience mild cognitive …

Diffusion tensor imaging (DTI) allows measuring fractional anisotropy and similar
microstructural indices of the brain white matter. Lower than normal fractional anisotropy as …

This study assessed the patterns of functional and structural connectivity abnormalities in
patients with Parkinson's disease with freezing of gait (PD FOG+) compared with those …

There is abundant evidence that the pathophysiology of Parkinson's disease (PD) is not
confined to the nigrostriatal dopaminergic pathway but propagates along the cortico‐basal …

In Parkinson's disease (PD), freezing of gait (FOG) is associated with widespread functional
and structural gray matter changes throughout the brain. Previous study of freezing‐related …

Parkinson's disease (PD) is characterized primarily by a dysfunctional basal ganglia (BG)
system, producing motor and non-motor symptoms. A significant number of studies have …

Objectives Parkinson disease (PD) is associated with cognitive impairments. However, the
underlying neural mechanism of cognitive impairments in PD is still not clear. This study …

Parkinson's disease (PD) is a heterogeneous neurological disorder with a variety of motor
and non-motor symptoms. The underlying mechanisms of these symptoms are not fully …

Objective Functional and structural brain alterations of cognitively normal Parkinson's
disease (PD-CN) and Parkinson's disease mild cognitive impairment (PD-MCI) patients …

Classical motor symptoms of Parkinson's disease (PD) such as tremor, rigidity, bradykinesia,
and axial symptoms are graded in the Movement Disorders Society Unified Parkinson's …