Abstract Parkinson's disease (PD), a neurodegenerative disorder, is caused due to the lack
of dopamine neurotransmitters throughout the substantia nigra. Its diagnosis in the earlier …

Parkinson's disease (PD) is one of the most common neurodegenerative disorders and the
second leading cause of dementia worldwide. With an aging population, the prevalence of …

Parkinson's disease (PD) is characterized by motor dysfunctions including bradykinesia,
tremor at rest and motor instability. These symptoms are associated with the progressive …

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

Background Retinal microvascular alterations have been previously described in
Parkinson's disease (PD) patients using optical coherence tomography angiography (OCT …

Parkinson's disease (PD) is a multifaceted neurodegenerative disorder accompanied by
mild cognitive impairment (MCI) as a crucial nonmotor manifestation. Event-related …

Background Retinal optical coherence tomography findings in Lewy body diseases and their
implications for visual outcomes remain controversial. We investigated whether region …

Non-motor symptoms are common in Parkinson's disease (PD) and they represent a major
source of disease burden. Several non-motor manifestations, such as rapid eye movement …

Heterogeneity between late-onset Parkinson's disease (LOPD) and early-onset Parkinson's
disease (EOPD) is mainly reflected in the following aspects including genetics, disease …

In the last decades, a number of Diffusion Weighted Imaging (DWI) based techniques have
been developed to study non-invasively human brain tissues, especially white matter (WM) …