BACKGROUND AND PURPOSE: Disturbance of the autonomic nervous system (ANS) is
frequently encountered in Parkinson's disease (PD). In this study, we examined changes in …

Objective Orthostatic hypotension (OH) is common in Parkinson disease (PD) and multiple
system atrophy of parkinsonian type (MSA-P), but the pathophysiology of OH is different in …

There is no general agreement regarding several aspects of the role of the sympathetic
system on cerebral haemodynamics such as extent of effectiveness, operational range and …

Background. Orthostatic hypotension (OH) is an important nonmotor manifestation of
Parkinson's disease (PD). Changes in cerebrovascular reactivity may contribute to this …

Cold pressor test (CPT) evokes generalized activation of the sympathetic nervous system
(SNS). The activity of SNS may be estimated by monitoring the mean blood velocity (vm) in …

OBJECTIVE: Our aim was to look for a probable relationship between cerebral vasomotor
reactivity (VMR) and orthostatic hypotension (OH) in Parkinson's disease (PD). MATERIALS …

Purpose. Disturbances of the autonomic nervous system are common in patients with
Parkinson's disease (PD) but the effect of deep brain stimulation of the subthalamic nucleus …

We hypothesized that cerebral blood flow (CBF) regulation in the posterior circulation differs
from that of the anterior circulation during a cold pressor test (CPT) and is accompanied by …

Orthostatic hypotension (OH) is one of the many autonomic disturbances observed in
Parkinson's disease (PD). It has been debated whether an additional impairment of cerebral …

Objectives‐To clarify the autonomic dysfunction in idiopathic Parkinson's disease (PD) and
vascular parkinsonism (VP), we investigated the relationship between blood pressure (BP) …