Results 101 to 110 of about 3,313,018 (220)

Dynamic Cerebral Autoregulation Reproducibility Is Affected by Physiological Variability

Frontiers in Physiology, 2019
Parameters describing dynamic cerebral autoregulation (DCA) have limited reproducibility. In an international, multi-center study, we evaluated the influence of multiple analytical methods on the reproducibility of DCA.
Marit L. Sanders, Jan Willem J. Elting, Ronney B. Panerai, Marcel Aries, Edson Bor-Seng-Shu, Alexander Caicedo, Max Chacon, Erik D. Gommer, Sabine Van Huffel, Sabine Van Huffel, José L. Jara, Kyriaki Kostoglou, Adam Mahdi, Vasilis Z. Marmarelis, Georgios D. Mitsis, Martin Müller, Dragana Nikolic, Ricardo C. Nogueira, Stephen J. Payne, Corina Puppo, Dae C. Shin, David M. Simpson, Takashi Tarumi, Bernardo Yelicich, Rong Zhang, Jurgen A. H. R. Claassen   +25 more
doaj   +1 more source

Assessment of dynamic cerebral autoregulation and cerebral carbon dioxide reactivity during normothermic cardiopulmonary bypass

, 2015
Despite increased risk of neurological complications after cardiac surgery, monitoring of cerebral hemodynamics during cardiopulmonary bypass (CPB) is still not a common practice.
Maessen, Jos G., Maessen, Jos G.; id_orcid, Severdija, Ervin E., Gommer, Erik D., Mess, Werner H., Weerwind, Patrick W., Reulen, Jos P. H.   +6 more
core   +1 more source

The BOLD MRI response of the brain to alterations in arterial blood pressure

The impact of blood pressure changes on cerebral blood flow is an important area of investigation. The cerebral autoregulation mechanism acts to maintain blood supply to the brain, despite changes in blood pressure.
Darekar, Angela Anagha
core   +1 more source

Prefrontal Cortex Hemodynamics and Age: A Pilot Study Using Functional Near Infrared Spectroscopy in Children

Frontiers in Neuroscience, 2014
Cerebral hemodynamics reflect cognitive processes and underlying physiological processes, both of which are captured by functional near infrared spectroscopy (fNIRS).
Afrouz A Anderson, Afrouz A Anderson, Elizabeth eSmith, Victor eChernomordik, Yasaman eArdeshirpour, Fatima eChowdhry, Audrey eThurm, David eBlack, Dennis eMatthews, Owen eRennert, Amir H Gandjbakhche   +10 more
doaj   +1 more source

Defying gravity: Breath, beat and brain

Experimental Physiology, EarlyView.
Shigehiko Ogoh, Damian Miles Bailey
wiley   +1 more source

Frequency-resolved analysis of coherent oscillations of local cerebral blood volume, measured with near-infrared spectroscopy, and systemic arterial pressure in healthy human subjects.

PLoS ONE, 2019
We report a study on twenty-two healthy human subjects of the dynamic relationship between cerebral hemoglobin concentration ([HbT]), measured with near-infrared spectroscopy (NIRS) in the prefrontal cortex, and systemic arterial blood pressure (ABP ...
Kristen Tgavalekos, Thao Pham, Nishanth Krishnamurthy, Angelo Sassaroli, Sergio Fantini   +4 more
doaj   +1 more source

Effect of progressive normobaric hypoxia on dynamic cerebral autoregulation

Experimental Physiology, 2016
What is the central question of this study? Acute hypoxia reduces dynamic cerebral autoregulation (dCA); however, it is unclear what level of hypoxia is necessary to exert this effect. We sought to investigate whether dCA would be reduced during progressive periods of normobaric hypoxia using a duplex Doppler ultrasound technique to evaluate the ...
Masahiro, Horiuchi, Junko, Endo, Shohei, Dobashi, Masataka, Kiuchi, Katsuhiro, Koyama, Andrew W, Subudhi   +5 more
openaire   +2 more sources

Mechanisms regulating cerebral perfusion during running exercise: Influence of foot strike‐induced pulsatility oscillations, CO2 reactivity and BP

The Journal of Physiology, EarlyView.
Abstract figure legend Young, healthy males and females completed an incremental running test, demonstrating a progressive increase in middle cerebral artery blood velocity (MCAv) up to maximal exercise despite reductions in end‐tidal CO2. To investigate the underlying mechanism, foot‐strike timing was synchronized to the diastolic phase of the cardiac
Lydia L. Simpson, Dean R. Perkins, Connor A. Howe, Christina D. Bruce, William K. Cornwell III, Justin S. Lawley   +5 more
wiley   +1 more source

Estados alterados de la conciencia tras un daño cerebral [PDF]

, 2021
Las personas somos conscientes de nosotras mismas y de nuestro entorno a través de la conciencia. No obstante, los estados alterados de la conciencia son situaciones como el coma u otros estados clínicos en los que personas con un daño cerebral severo no
Federación Española de Daño Cerebral
core  

Energetic microdomains and the vascular control of neuronal and muscle excitability: Toward a unified model

The Journal of Physiology, EarlyView.
Abstract figure legend The capillary–mitochondria–ion channel (CMIC) axis scales structural resources to match functional workload. (Left) In settings of restricted energetic capacity (e.g. cortical neurons), sparse capillary networks and modest mitochondrial pools set a lower energetic ceiling, sufficient to support phasic, low‐workload excitability. (
L. Fernando Santana, Scott Earley
wiley   +1 more source