Results 211 to 220 of about 32,185 (293)

Cerebrovascular pressure-reactivity in normal pressure hydrocephalus

Cerebrospinal Fluid Research, 2004
Gelling L, Momjian S, Czosnyka M, Van Den Boogaard F, Czosnyka ZH, Pickard JD   +5 more
doaj   +1 more source

Effects of the angle of head‐down tilt on dynamic cerebral autoregulation during combined exposure to cephalad fluid shift and mild hypercapnia

Experimental Physiology, EarlyView.
Abstract Astronauts experience combined exposure to a cephalad fluid shift and mild hypercapnia during space missions, potentially contributing to health problems. Such combined exposure may weaken dynamic cerebral autoregulation. The magnitude of cephalad fluid shift varies between individuals, and dynamic cerebral autoregulation may be affected more ...
Tomokazu Kato, Yojiro Ogawa, Ken‐ichi Iwasaki   +2 more
wiley   +1 more source

Cerebrovascular reactivity differences in healthy cerebral gray and white matter. [PDF]

Magn Reson Med
Levine HT, Poublanc J, Sayin ES, Duffin J, Sobczyk O, Fisher JA, Mikulis DJ.   +6 more
europepmc   +1 more source

Regional changes in cerebral blood flow between the upright and supine posture and over 3 days of bed rest

Experimental Physiology, EarlyView.
Abstract A reduction in cerebral blood flow (CBF) has been observed during spaceflight and bed rest. We aimed to examine the magnitude and regional heterogeneity of the decrease in CBF during bed rest compared to posture changes on Earth. Seventeen participants (age, 29 ± 9 years, 7 females) were studied in the upright and supine posture and over 3 ...
Carmen Possnig, Kyohei Marume, Gautam Babu, Sylvan L. J. E. Janssen, Christopher M. Hearon Jr, Katrin A. Dias, Satyam Sarma, Justin S. Lawley, Benjamin D. Levine   +8 more
wiley   +1 more source

Cerebrovascular reactivity metrics as predictors of cognitive performance in healthy ageing: insights from transcranial colour-coded ultrasound. [PDF]

Ultrasound J
Ackah JA, Chen X, Zeng H, Zhong J, Chan JTL, Lo MLC, Cai J.   +6 more
europepmc   +1 more source

Cerebrovascular pulsatility following long duration spaceflight is associated with changes in pulse pressure and carotid artery stiffness

Experimental Physiology, EarlyView.
Abstract Central artery stiffening increases the haemodynamic pulsations transmitted downstream towards target organs, including the brain. While recent evidence suggests that long duration spaceflight is associated with reduced common carotid artery (CCA) distensibility, cerebrovascular pulsatility has not been extensively characterized in astronauts.
Roxanne Fournier, Danielle K. Greaves, J. Kevin Shoemaker, Philippe Arbeille, Richard L. Hughson, Andrew D. Robertson   +5 more
wiley   +1 more source

Cerebrovascular Reactivity at Rest and Its Association With Cognitive Function in People With Genetic Frontotemporal Dementia. [PDF]

Neurology
Kancheva IK, Bouzigues A, Russell LL, Foster PH, Ferry-Bolder E, Van Swieten JC, Jiskoot LC, Seelaar H, Sánchez-Valle R, Laforce R, Graff C, Galimberti D, Vandenberghe R, de Mendonça A, Tiraboschi P, Santana I, Gerhard A, Levin J, Sorbi S, Otto M, Ducharme S, Butler C, Le Ber I, Finger E, Tartaglia MC, Masellis M, Synofzik M, Moreno F, Borroni B, Rohrer JD, van der Weerd L, Rowe JB, Tsvetanov K, GENFI Consortium.   +33 more
europepmc   +1 more source

Uncovering the impact of the cardiovascular system on cerebrovascular health using MRI

Experimental Physiology, EarlyView.
Abstract Human cerebrovasculature is finely tuned to enable local changes in blood flow to meet the brain's demands, whilst protecting the brain from systemic changes in blood pressure, both acutely during a heartbeat and chronically over time. This review summarises cerebrovascular structure and function, their role in disease and neurodegeneration ...
Ian D. Driver, Kevin Murphy
wiley   +1 more source

Problems and solutions in quantifying cerebrovascular reactivity using BOLD-MRI. [PDF]

Imaging Neurosci (Camb)
Schulman JB, Uludağ K.
europepmc   +1 more source