Results 41 to 50 of about 34,817 (254)

Exercise, cognition and Alzheimer’s disease: More is not necessarily better [PDF]

, 2005
Regional hypoperfusion, associated with a reduction in cerebral metabolism, is a hallmark of Alzheimer’s disease (AD) and contributes to cognitive decline. Cerebral perfusion and hence cognition can be enhanced by exercise.
Adlard, Alessi, Anton, Attwell, Baumbach, Bierman, Carmeliet, Chen, Chen, Churchill, Cohen, Colcombe, Cooke, Corder, Cott, Critchley, Cumming, Daley, De la Torre, Dick Swaab, Diesfeldt, Dubelaar, Eldridge, Endres, Erik Scherder, Farkas, Fedele, Fernández-Vizarra, Folstein, Fratiglioni, Friedman, Graham, Guigoz, Hamel, Harkany, Hayward, Hellström, Herrmann, Herrmann, Hoffman, Huang, Hönigfeld, Iadecola, Ide, Ide, Ide, Jagust, Johnson, Jørgensen, Katz, Keller, Kivipelto, Koike, Koistinaho, Kubes, Kurosawa, Launer, Laura Eggermont, Lawton, Lazowski, Lehtovirta, Liesi, Lijnen, Lindenmuth, MacRae, Martel, Matsuda, Matsuda, Maxwell, Melchor, Meltzer, Meyer, Miklossy, Monji, Morgan, Moro, Mulder, Muldowney, Nagahama, Nagai, Nakajima, Namazi, Naso, Palleschi, Palmer, Parihar, Paul Luiten, Petersen, Plutchik, Pober, Pott, Powell, Prager, Prunell, Raven, Reiman, Reitan, Rolland, Roth, Salehi, Scherder, Schini-Kerth, Selley, Skoog, Smith, Sobel, Spinler, Srikiatkhachorn, Suzuki, Swaab, Swaab, Swaab, Swain, Tappen, Tappen, Teri, Tinetti, Tong, Tong, Tsolaki, Tucker, Tucker, Ueda, Ushijima, Van de Winckel, Van Dyck, Van Gelder, Wang, Warkentin, Wechsler, Wechsler, Weller, Wenk, Whelton, White, Wilson, Wolf, Zarit   +137 more
core   +1 more source

Dynamic cerebral autoregulation is acutely impaired during maximal apnoea in trained divers.

PLoS ONE, 2014
AimsTo examine whether dynamic cerebral autoregulation is acutely impaired during maximal voluntary apnoea in trained divers.MethodsMean arterial pressure (MAP), cerebral blood flow-velocity (CBFV) and end-tidal partial pressures of O2 and CO2 (PETO2 and
Troy J Cross, Justin J Kavanagh, Toni Breskovic, Bruce D Johnson, Zeljko Dujic   +4 more
doaj   +1 more source

Detection of impaired cerebral autoregulation improves by increasing arterial blood pressure variability

, 2012
Although the assessment of dynamic cerebral autoregulation (CA) based on measurements of spontaneous fluctuations in arterial blood pressure (ABP) and cerebral blood flow (CBF) is a convenient and much used method, there remains uncertainty about its ...
Allen, Robert, Birch, Anthony A., Bush, Glen, Fan, Lingke, Katsogridakis, Emmanuel, Panerai, Ronney B., Potter, John F., Simpson, David M.   +7 more
core   +1 more source

Changes in Hemodynamic Responses in Chronic Stroke Survivors Do Not Affect fMRI Signal Detection in a Block Experimental Design [PDF]

, 2013
The use of canonical functions to model BOLD-fMRI data in people post-stroke may lead to inaccurate descriptions of task-related brain activity. The purpose of this study was to determine whether the spatiotemporal profile of hemodynamic responses (HDRs)
Promjunyakul, Nutta-on, Schindler-Ivens, Sheila, Schmit, Brian D.   +2 more
core   +2 more sources

Cerebral autoregulation in Alzheimer's disease [PDF]

Journal of Cerebral Blood Flow & Metabolism, 2011
Cerebral autoregulation aims to stabilize blood flow to the brain during variations in perfusion pressure, thus protecting the brain against the risks of low or high systemic blood pressure. This vital mechanism is severely impaired in the transgenic mouse model of Alzheimer's disease (AD) that abundantly produces amyloid-β peptide β1-42.
Claassen, J.A.H.R., Zhang, R.
openaire   +4 more sources

Optimising the assessment of cerebral autoregulation from black box models

, 2014
Cerebral autoregulation (CA) mechanisms maintain blood flow approximately stable despite changes in arterial blood pressure. Mathematical models that characterise this system have been used extensively in the quantitative assessment of function ...
Angarita-Jaimes, N., Kouchakpour, H., Liu, J., Panerai, R.B., Simpson, D.M.   +4 more
core   +1 more source

Dissociation of Cerebral Blood Flow and Femoral Artery Blood Pressure Pulsatility After Cardiac Arrest and Resuscitation in a Rodent Model: Implications for Neurological Recovery. [PDF]

, 2020
Background Impaired neurological function affects 85% to 90% of cardiac arrest (CA) survivors. Pulsatile blood flow may play an important role in neurological recovery after CA.
Akbari, Yama, Bazrafkan, Afsheen, Choi, Bernard, Crouzet, Christian, Lee, Donald, Tromberg, Bruce J, Wilson, Robert H   +6 more
core   +1 more source

Adaptive feedback analysis and control of programmable stimuli for assessment of cerebrovascular function [PDF]

, 2013
The assessment of cerebrovascular regulatory mechanisms often requires flexibly controlled and precisely timed changes in arterial blood pressure (ABP) and/or inspired CO2.
Allen, Robert, Birch, Anthony A, Bush, Glen, Fan, Lingke, Katsogridakis, Emmanuel, Panerai, Ronney B, Potter, John, Simpson, David M   +7 more
core   +1 more source

Effects of desflurane on cerebral autoregulation [PDF]

British Journal of Anaesthesia, 2001
The aim of this study was to determine the effects of desflurane, at 1 and 1.5 MAC, on cerebral autoregulation. Data were analysed from eight patients undergoing non-neurosurgical procedure. The blood flow velocity in the middle cerebral artery was measured by transcranial Doppler ultrasound and cerebral autoregulation was assessed by the transient ...
N M, Bedforth, K J, Girling, H J, Skinner, R P, Mahajan   +3 more
openaire   +2 more sources

Correlation of rheoencephalography and laser Doppler flow: a rat study

Journal of Electrical Bioimpedance, 2016
Measuring brain electrical impedance (rheoencephalography) is a potential technique for noninvasive, continuous neuro-monitoring of cerebral blood flow autoregulation in humans.
Bodo Michael, Sheppard Ryan, Hall Aaron, Baruch Martin, Laird Melissa, Tirumala Shravalya, Mahon Richard   +6 more
doaj   +1 more source