Cerebral hemodynamics, eg, cerebral blood flow, can be measured and quantified using
many different methods, with transcranial Doppler ultrasound (TCD) being one of the most …

The larger intracranial conduit vessels contribute to the total cerebral vascular resistance,
and understanding their vasoreactivity to physiological stimuli is required when attempting to …

The integrated responses regulating cerebral blood flow are understudied in women,
particularly in relation to potential regional differences. In this study, we compared dynamic …

New Findings What is the central question of this study? What are the independent effects of
hypoxia and hypocapnia on cerebral haemodynamics and cognitive function? What is the …

High-altitude ascent imposes a unique cerebrovascular challenge due to two opposing
blood gas chemostimuli. Specifically, hypoxia causes cerebral vasodilation, whereas …

Atrial fibrillation (AF) and hypertension (HTN) are both associated with impaired
cerebrovascular carbon dioxide reactivity (CVRCO2), an indicator of cerebral vasodilatory …

Background Hypercapnia during breath holding is believed to be the dominant driver behind
the modulation of cerebral blood flow (CBF). However, increasing evidence show that mild …

Although a portion of patients with cerebral small vessel disease (CSVD) present mental
disorders, there is currently a lack of appropriate technologies to evaluate brain functions …

Purpose Cerebrovascular reactivity (CVR) is impaired in adolescents with cardiovascular
disease risk factors. A breath‐hold test is a noninvasive method of assessing CVR, yet there …

Volitional Apnea produces a robust peak sympathetic response through several interacting
mechanisms. However, the specific contribution of each mechanism has not been …