The presence of postganglionic sympathetic denervation is well established in Parkinson's
disease (PD). Denervation at cardiac and blood vessel sites may lead to abnormal …

Acute short‐term changes in blood pressure (BP) and cardiac output (CO) affect cerebral
blood flow (CBF) in healthy subjects. As yet, however, we do not know how spontaneous …

Cognitive dysfunction constitutes a major non-motor manifestation of Parkinson disease
(PD), but the mechanisms remain incompletely understood. Neurocirculatory abnormalities …

Cardiac parasympathetic function is strongly affected by aging. Although sympathetic
dysfunction has been well documented in Parkinson's disease (PD), cardiac …

The pressure-passive cerebrovasculature is affected by alterations in cerebral perfusion
pressure (CPP) and arterial blood gases (eg, pressure of arterial [Pa] CO 2), where acute …

The aim of this study was to evaluate cardiovascular autonomic modulation in response to
an orthostatic stress in healthy subjects and Parkinson's disease (PD). The study included …

Objective. The aim of this study was to identify patients with Parkinson′ s disease who
showed loss or decrease of nocturnal blood pressure fall (nondipper patients) as a marker of …

Objective To investigate the 24 h blood pressure profile in patients with Parkinson's disease
with intact autonomic function or with autonomic failure and patients with multiple system …

Cerebral autoregulation (CA) is a critical process for the maintenance of cerebral blood flow
and oxygenation. Assessment of CA is frequently used for experimental research and in the …

Although the dependence of cerebral perfusion on blood pressure has been well studied,
little data is available about the effect cardiac output has on cerebral flow velocity and …