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Brain cell network supplies neurons with energy

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IMAGE: When an astrocyte in the thalamus is filled with a dye, it diffuses into neighboring cells of the network (red). These include many oligodendrocytes (green), as shown by the overlay.
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Credit: © Group Steinhäuser; from: Cerebral Cortex, January 2018;28: 213-222; doi: 10.1093/cercor/bhw368
The human brain has about as many neurons as glial cells. These are divided into four major groups: the microglia, the astrocytes, the NG2 glial cells, and the oligodendrocytes. Oligodendrocytes function primarily as a type of cellular insulating tape: They form long tendrils, which consist largely of fat-like substances and do not conduct electricity. These wrap around the axons, which are the extensions through which the nerve cells send their electrical impulses. This prevents short circuits and accelerates signal forwarding. ....

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Infamous US Record during Covid-19 Pandemic

A tragic milestone, the result of ignoring China’s experience?
by John V. Walsh / January 9th, 2021
A health worker conducts a nucleic acid test on a resident in Chengdu, in western China’s Sichuan province, on December 8, 2020, after new Covid-19 cases were detected in the city. Almost from the start, China has responded rapidly to outbreaks. Photo: AFP / STR
December 11, 2020, is another December day that should “live in infamy” in the United States. On that day total US deaths due to Covid-19 surpassed the 291,557 American combat fatalities in World War II. The European Union saw much the same grim toll, with more than 300,000 dead. (See figure.) ....

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New Sensor Could Detect Real-Time Changes in Brain Serotonin Levels During Sleep, Fear

New Sensor Could Detect Real-Time Changes in Brain Serotonin Levels During Sleep, Fear
Written by AZoSensorsDec 24 2020
Serotonin is a neurochemical that plays a critical role in the way the brain controls our thoughts and feelings. For example, many antidepressants are designed to alter serotonin signals sent between neurons.
In an article in
Cell, National Institutes of Health-funded researchers described how they used advanced genetic engineering techniques to transform a bacterial protein into a new research tool that may help monitor serotonin transmission with greater fidelity than current methods. Preclinical experiments, primarily in mice, showed that the sensor could detect subtle, real-time changes in brain serotonin levels during sleep, fear, and social interactions, as well as test the effectiveness of new psychoactive drugs. The study was funded, in part, by the NIH s Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative wh ....

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AI-Based Sensor may Help Detect Serotonin Levels During Sleep, Fear

AI-Based Sensor may Help Detect Serotonin Levels During Sleep, Fear
Written by AZoRoboticsDec 24 2020
Serotonin is a neurochemical that plays a critical role in the way the brain controls our thoughts and feelings. For example, many antidepressants are designed to alter serotonin signals sent between neurons.
In an article in
Cell, National Institutes of Health-funded researchers described how they used advanced genetic engineering techniques to transform a bacterial protein into a new research tool that may help monitor serotonin transmission with greater fidelity than current methods. Preclinical experiments, primarily in mice, showed that the sensor could detect subtle, real-time changes in brain serotonin levels during sleep, fear, and social interactions, as well as test the effectiveness of new psychoactive drugs. The study was funded, in part, by the NIH s Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative which aims to revolu ....

United States , University Of California Davis , Johnj Ngai , Lorenl Looger , Edmund Ned Talley , Viviana Gradinaru , Us Department Of Energy Contract No , Howard Hughes Medical Institute Janelia Research Campus , Vector Engineering Research , Intramural Research Programs , Brain Research , Cellular Neuroscience Of The Chen Institute , University Of California Davis School Medicine , National Institute Of Mental Health , National Institute On Alcohol Abuse , Mistletoe Foundation , Beckman Institute , Heritage Medical Research Institute , Howard Hughes Medical Institute , National Institute Of Neurological Disorders , National Institutes , Advancing Innovative Neurotechnologies , Lin Tian , California Davis School , National Institute , Neurological Disorders ,

Científicos descubren dos 'recetas' para frenar el envejecimiento de cerebro

Científicos descubren dos 'recetas' para frenar el envejecimiento de cerebro
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