Results 41 to 50 of about 10,045 (232)

Inferring common cognitive mechanisms from brain blood-flow lateralization data: a new methodology for fTCD analysis [PDF]

, 2014
Current neuroimaging techniques with high spatial resolution constrain participant motion so that many natural tasks cannot be carried out. The aim of this paper is to show how a time-locked correlation-analysis of cerebral blood flow velocity (CBFV ...
Fairlie, Jo, Meyer, Georg, Spray, Amy, Uomini, Natalie   +3 more
core   +2 more sources

Respiration Can Trigger Cerebrovascular Reactivity: A Novel Method to Quantify Cerebrovascular Resistance Dynamics Using Real‐Time Phase‐Contrast MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To directly quantify respiration‐driven cerebrovascular resistance dynamics (CRD) using a gas‐free MRI framework based on the internal‐to‐external artery carotid flow ratio (ratio_Q). Theory and Methods Two independent datasets (n = 10 and n = 17) were used to evaluate repeatability and to compare breathing conditions.
Pan Liu, Qiuting Wen, Kimi Owashi, Jean‐Marc Constans, Cyrille Capel, Olivier Balédent   +5 more
wiley   +1 more source

Application of transcranial Doppler ultrasonography in cardiovascular surgery

Chinese Journal of Contemporary Neurology and Neurosurgery
The neurological complications following cardiovascular surgery can significantly affect the prognosis of patients. As a convenient and non⁃invasive intraoperative neurological monitoring method, transcranial Doppler ultrasonography (TCD) can provide ...
ZHOU Ying⁃hua, ZHANG Gui⁃tao, ZHOU Qi⁃lin, MA Ya⁃jun, LI Shu⁃juan   +4 more
doaj   +1 more source

Academic and cerebrovascular outcomes after neurodevelopmental screening in sickle cell disease: A longitudinal cohort study

Developmental Medicine &Child Neurology, EarlyView.
Neurodevelopmental screening in toddlers or preschoolers with sickle cell disease (SCD) predicts future academic deficits. Screening sensitivity for future academic deficits is highest in preschoolers with SCD. Brief neurodevelopmental screening tools can identify high risk children for early intervention. Abstract Aim To assess the predictive validity
Sarah E. Bills, Jeffrey Schatz, Elizabeth Gillooly, Julia D. Johnston, A. Lauren Waters, Alyssa M. Schlenz   +5 more
wiley   +1 more source

Development history of cerebral autoregulation

Chinese Journal of Contemporary Neurology and Neurosurgery, 2021
Cerebral autoregulation (CA) refers to the ability to maintain cerebral blood flow (CBF) relatively constant under the condition of systemic arterial blood pressure (ABP) fluctuation.
LI Fan, XING Hai ⁃ ying, JIN Hai ⁃ qiang, SUN Yun ⁃ chuang, PENG Qing, SUN Wei, WANG Zhao ⁃ xia, HUANG Yi⁃ning   +7 more
doaj   +1 more source

Confined spaces in space: Cerebral implications of chronic elevations of inspired carbon dioxide and implications for long‐duration space travel

Experimental Physiology, EarlyView.
Abstract Cerebrovascular regulation is critically dependent upon the arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_{\mathrm{2}}}}}$), owing to its effect on cerebral blood flow, tissue PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$, tissue proton concentration, cerebral metabolism and cognitive and neuronal ...
Jay M. J. R. Carr, Philip N. Ainslie, Trevor Day   +2 more
wiley   +1 more source

Role of transcranial Doppler ultrasonography in stroke [PDF]

Postgraduate Medical Journal, 2007
AbstractTranscranial Doppler sonongraphy is a non-invasive, non-ionising, inexpensive, portable and safe technique that uses a pulsed Doppler transducer for assessment of intracerebral blood flow. This article deals with the principles and technique of transcranial Doppler sonography.
Sanjukta, Sarkar, Sujoy, Ghosh, Sandip Kumar, Ghosh, Andrew, Collier   +3 more
openaire   +2 more sources

Feasibility of superimposed supine cycling and lower body negative pressure as an effective means of prolonging exercise tolerance in individuals experiencing persisting post‐concussive symptoms: Preliminary results

Experimental Physiology, EarlyView.
Abstract To examine the feasibility, utility and safety of superimposed lower body negative pressure (LBNP) and tilt during supine cycling in individuals suffering from persisting post‐concussive symptoms (PPCS). Eleven individuals aged 17–31 (6 females/5 males) participated in two randomized separate visits, 1 week apart.
Raelyn Javra, Joel S. Burma, Nathan E. Johnson, Jonathan D. Smirl   +3 more
wiley   +1 more source

Triptans and CGRP blockade - impact on the cranial vasculature [PDF]

, 2017
The trigeminovascular system plays a key role in the pathophysiology of migraine. The activation of the trigeminovascular system causes release of various neurotransmitters and neuropeptides, including serotonin and calcitonin gene-related peptide ...
Alejandro Labastida-Ramírez, Anne Luise Vollesen, Christian Lampl, Francesca Cortese, Francesca Marchese, Lanfranco Pellesi, Messoud Ashina, Michele Romoli, On behalf of the School of Advanced Studies of the European Headache Federation (EHF-SAS), Silvia Benemei   +9 more
core   +3 more sources

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