Results 41 to 50 of about 28,046 (293)

Role of Astrocytes in Neurovascular Coupling [PDF]

Neuron, 2011
Neural activity is intimately tied to blood flow in the brain. This coupling is specific enough in space and time that modern imaging methods use local hemodynamics as a measure of brain activity. In this review, we discuss recent evidence indicating that neuronal activity is coupled to local blood flow changes through an intermediary, the astrocyte ...
Petzold, Gabor C, Murthy, Venkatesh N
openaire   +2 more sources

Contralateral dissociation between neural activity and cerebral blood volume during recurrent acute focal neocortical seizures [PDF]

, 2014
OBJECTIVE: Whether epileptic events disrupt normal neurovascular coupling mechanisms locally or remotely is unclear. We sought to investigate neurovascular coupling in an acute model of focal neocortical epilepsy, both within the seizure onset zone and ...
Berwick, J., Boorman, L., Bruyns-Haylett, M., Harris, S., Kennerley, A., Ma, H., Overton, P.G., Schwartz, T.H., Zhao, M.   +8 more
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Spreading Depression and Neurovascular Coupling [PDF]

Stroke, 2013
Spreading depression, discovered by Leao in 1944,1 is an intense depolarization wave that slowly propagates (≈3 mm/min) in gray matter by way of contiguity, regardless of functional divisions or arterial territories. The depolarization is associated with massive transmembrane ionic and water shifts coupled to a surge in extracellular K+ and ...
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The Oxygen Paradox of Neurovascular Coupling [PDF]

Journal of Cerebral Blood Flow & Metabolism, 2013
The coupling of cerebral blood flow (CBF) to neuronal activity is well preserved during evolution. Upon changes in the neuronal activity, an incompletely understood coupling mechanism regulates diameter changes of supplying blood vessels, which adjust CBF within seconds.
Christoph, Leithner, Georg, Royl
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Altered Neurovascular Coupling in Unilateral Pulsatile Tinnitus

Frontiers in Neuroscience, 2022
ObjectiveAltered cerebral blood flow (CBF) and regional homogeneity (ReHo) have been reported in pulsatile tinnitus (PT) patients. We aimed to explore regional neurovascular coupling changes in PT patients.Materials and MethodsTwenty-four right PT ...
Xiaoshuai Li, Ning Xu, Chihang Dai, Xuxu Meng, Xiaoyu Qiu, Heyu Ding, Rong Zeng, Han Lv, Pengfei Zhao, Zhenghan Yang, Shusheng Gong, Zhenchang Wang   +11 more
doaj   +1 more source

Age-related changes in global motion coherence: conflicting haemodynamic and perceptual responses [PDF]

, 2018
Our aim was to use both behavioural and neuroimaging data to identify indicators of perceptual decline in motion processing. We employed a global motion coherence task and functional Near Infrared Spectroscopy (fNIRS). Healthy adults (n = 72, 18-85) were
A Arena, A Brodtmann, A Villringer, AJ Simmers, B Händel, B Rosengarten, B Sun, B Zalar, B Zimmerman, CK Tamnes, CL Grady, CM Stoppel, CR Pernet, CV Hutchinson, CV Hutchinson, DB Tran, DC Park, DD Garrett, E Maggioni, E O’Connor, E Roudaia, EG Conlon, EG Conlon, ER Sowell, FA Sorond, G Gratton, G Jasdzewski, G Maehara, G Porter, G Rees, GA Rousselet, GB Remijn, GC Gilmore, GL Trick, H Jasper, H Kojima, H Nakamura, HA Allen, HC Agnew, J Billino, J Carp, J Grinband, JD Bower, JF Norman, JH Meek, K Ball, KM Rodrigue, KS Pilz, KS Pilz, L Koessler, L Tang, L-C Chen, LG-G Bogfjellmo, LM Ward, M Kuba, MA McIntosh, MJ Herrmann, ML Schroeter, MM Bieniek, MW Voss, N Bocheva, N Raz, N Raz, OJ Braddick, P Atchley, PA Reuter-Lorenz, PJ Bennett, PJ Knox, R Gatto, R Jurca, R Wojciechowski, RB Tootell, RB Tootell, RF Helfrich, RJ Snowden, S Ajina, S Fantini, S Gilaie-Dotan, S Koyama, S Narasimhan, S Peca, S Sunaert, S Wijeakumar, S Wijeakumar, SC Biehl, SN Thiyagesh, T Hashimoto, T Näsi, TC Emmerling, TJ Huppert, V Kavcic, V Toronov, WNJM Colier, Y Kamitani   +93 more
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Neurovascular Decoupling Is Associated With Lobar Intracerebral Hemorrhages and White Matter Hyperintensities

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Background Neurovascular coupling is a fundamental aspect of brain function by regulating cerebral blood flow in response to regional neuronal activity.
Suzanne E. van Dijk, Nadieh Drenth, Anne Hafkemeijer, Gerda Labadie, Marie‐Noëlle W. Witjes‐Ané, Frank Baas, Jeroen P. Vreijling, Gerard J. Blauw, Serge A. R. B. Rombouts, Jeroen van der Grond, Sanneke van Rooden   +10 more
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Neurovascular coupling is preserved in chronic stroke recovery after targeted photothrombosis

NeuroImage: Clinical, 2023
Functional neuroimaging, which measures hemodynamic responses to brain activity, has great potential for monitoring recovery in stroke patients and guiding rehabilitation during recovery.
Smrithi Sunil, John Jiang, Shashwat Shah, Sreekanth Kura, Kivilcim Kilic, Sefik Evren Erdener, Cenk Ayata, Anna Devor, David A. Boas   +8 more
doaj   +1 more source

Ultrastructure of neurovascular changes in human diabetic retinopathy [PDF]

, 2018
The previous concept regarding diabetic retinopathy assigned a primary role to hyperglycemia-induced microvascular alterations, while neuronal and glial abnormalities were considered to be secondary to either ischemia or exudation.
Artico, Marco, Biró, Zsolt, Fehér, János, Micera, Alessandra, Orlando, Maria Patrizia, Scuderi, Gianluca, Spoletini, Maria Luisa, Taurone, Samanta, Turchetta, Rosaria, Varsányi, Balázs   +9 more
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Brain capillary pericytes and neurovascular coupling

Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2021
The neurovascular coupling ensures that cerebral activity is matched by the relevant blood flow. The control of the blood flow is mediated by capillaries and by the precapillary aterioles. It is the tone of the mural cells, which include pericytes, smooth muscle cells and cells with intermediate phenotypes between pericytes and smooth muscle cells ...
Grubb, Søren, Lauritzen, Martin, Aalkjær, Christian   +2 more
openaire   +4 more sources