Results 131 to 140 of about 1,609,795 (412)

Potential use of oxygen as a metabolic biosensor in combination with T2*-weighted MRI to define the ischemic penumbra [PDF]

open access: yes, 2008
We describe a novel magnetic resonance imaging technique for detecting metabolism indirectly through changes in oxyhemoglobin:deoxyhemoglobin ratios and T2* signal change during ‘oxygen challenge’ (OC, 5 mins 100% O2). During OC, T2* increase reflects O2
Barrie Condon   +14 more
core   +1 more source

Neurodevelopmental Trajectories of the Human Cerebral Cortex

open access: yesJournal of Neuroscience, 2008
Understanding the organization of the cerebral cortex remains a central focus of neuroscience. Cortical maps have relied almost exclusively on the examination of postmortem tissue to construct structural, architectonic maps.
P. Shaw   +11 more
semanticscholar   +1 more source

Advances in Photonic Materials and Integrated Devices for Smart and Digital Healthcare: Bridging the Gap Between Materials and Systems

open access: yesAdvanced Materials, EarlyView.
This article summarizes significant technological advancements in materials, photonic devices, and bio‐interfaced systems, which demonstrate successful applications for impacting human healthcare via improved therapies, advanced diagnostics, and on‐skin health monitoring.
Seunghyeb Ban   +5 more
wiley   +1 more source

Attenuation of Focal Cerebral Ischemic Injury Following Post Ischemic Inhibition of Angiotensin Converting Enzyme (ACE) Activity in Normotensive Rat [PDF]

open access: yes
Central renin angiotensin system has an important role on the cerebral microcirculation and metabolism. Our previous work showed that inhibition of angiotensin converting enzyme (ACE) activity prior to induction of ischemia protected the brain from ...
دهقان, غلامعباس   +1 more
core   +1 more source

Alterations in the junctions between brain endothelial cells and pericytes during chronic sleep restriction [PDF]

open access: yes, 2019
Sleep loss produces blood-brain barrier (BBB) hyperpermeability by increasing endocytosis and promoting tight junction disassemble. Similar effects have been reported in mice with pericyte deficiency. In previous studies, we showed that pericytes seem to
MARIA FERNANDA MEDINA FLORES
core   +2 more sources

Common Blood Flow Changes across Visual Tasks: II. Decreases in Cerebral Cortex

open access: yesJournal of Cognitive Neuroscience, 1997
Nine previous positron emission tomography (PET) studies of human visual information processing were reanalyzed to determine the consistency across experiments of blood flow decreases during active tasks relative to passive viewing of the same stimulus ...
G. Shulman   +6 more
semanticscholar   +1 more source

Case of a 96‐year‐old woman with tilt of the subjective vertical axis

open access: yes
Annals of Clinical and Translational Neurology, EarlyView.
Markus A. Hobert   +4 more
wiley   +1 more source

Upconversion Nanoparticle‐Covalent Organic Framework Core–shell Particles as Therapeutic Microrobots Trackable With Optoacoustic Imaging

open access: yesAdvanced Materials, EarlyView.
Upconversion nanoparticle‐covalent organic framework core–shell particles provide enhanced contrast for optoacoustic imaging by leveraging the optical absorption of upconversion luminescence within the covalent organic framework matrix. Beyond their role as contrast agents, these particles enable customizable therapeutic agent loading and release, as ...
Dong Wook Kim   +8 more
wiley   +1 more source

Anticipatory banking of samples enables diagnosis of adenylosuccinase deficiency following molecular autopsy in an infant with vacuolating leukoencephalopathy

open access: yesAmerican Journal of Medical Genetics Part A, Volume 191, Issue 1, Page 234-237, January 2023., 2023
Abstract Adenylosuccinase deficiency is a rare inborn error of metabolism. We present a newborn who died at 52 days of age with clinical features suggestive of severe epileptic encephalopathy and leukodystrophy of unknown cause. Post‐mortem examination showed an unusual vacuolar appearance of the brain.
Spatikha Sitaram   +11 more
wiley   +1 more source

Towards comparative theoretical neuroanatomy of the cerebral cortex [PDF]

open access: yesarXiv, 2004
Despite differences in brain sizes and cognitive niches among mammals, their cerebral cortices posses many common features and regularities. These regularities have been a subject of experimental investigation in neuroanatomy for the last 100 years. It is believed that such studies may provide clues about cortical design principles and perhaps function.
arxiv  

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