Grey matter
hideGrey matter (or gray matter) is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites and both unmyelinated axons and myelinated axons), glial cells (astroglia and oligodendrocytes) and capillaries. Grey matter contains neural cell bodies, in contrast to white matter, which does not and mostly contains myelinated axon tracts. The color difference arises mainly from the whiteness of myelin. In living tissue, grey matter actually has a grey-brown color which comes from capillary blood vessels and neuronal cell bodies.
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News tagged with gray matter
Diffusion tensor imaging increases ability to remove benign tumors in children
Medicine & Health / Neuroscience
Dec 04, 2009 |
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A new study published this week in the Journal of Neurosurgery: Pediatrics finds that operative plans for removing Juvenile Pilocytic Astrocytoma, or JPA, tumors in the thalamus of the brain can be augmented with Diffusion Tensor ...
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Bacteria offer insights into human decision making
12 hours ago |
5 / 5 (6) |
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(PhysOrg.com) -- Scientists studying how bacteria under stress collectively weigh and initiate different survival strategies say they have gained new insights into how humans make strategic decisions that ...
RIT astronomer mines Spitzer Space Telescope data for massive starbursts
15 hours ago |
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Understanding the evolution of galaxies is one of the biggest questions confronting astronomers today. Looking at distant astronomical objects gives scientists important clues to the origins of the Milky Way Galaxy and other ...
Rodent smoke screen
Medicine & Health / Psychology & Psychiatry
15 hours ago |
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Rats passively exposed to tobacco smoke become dependent on nicotine, according to a new study by Dr. Adrie Bruijnzeel and colleagues from the University of Florida in the US. Their findings of how rats' brains respond to ...
5 top publishers plan rival to Kindle format
19 hours ago |
4.3 / 5 (3) |
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(AP) -- Five of the nation's largest publishers of newspapers and magazines plan to challenge Amazon.com Inc.'s Kindle electronic-book reader with their own digital format that would display in color and work on a variety ...
Absence of evidence for a meteorite impact event 13,000 years ago
Space & Earth / Earth Sciences
21 hours ago |
4.2 / 5 (11) |
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An international team of scientists led by researchers at the University of Hawaii at Manoa have found no evidence supporting an extraterrestrial impact event at the onset of the Younger Dryas ~13000 years ...
Leaked document stirs anger at climate summit
Dec 08, 2009 |
3.4 / 5 (9) |
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(AP) -- A leaked Danish document at the U.N. climate conference provoked angry criticism Tuesday from developing countries who feared it would shift more of the burden to curb greenhouse gases on poorer countries.
Cosmic rays hunted down: Physicists are closing in on the origin of cosmic rays
Dec 07, 2009 |
4.4 / 5 (11) |
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(PhysOrg.com) -- A thin rain of charged particles continually bombards our atmosphere from outer space. The mysterious particles were first detected 100 years ago but until 10 years ago when a new type of ...
Facebook (and Systems Biologists) Take Note: Network Analysis Reveals True Connections
Technology / Computer Sciences
Dec 07, 2009 |
3.9 / 5 (8) |
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(PhysOrg.com) -- Facebook figures out that you know Holly, although you haven't seen her in 10 years, because you have four mutual friends -- a good predictor of direct friendship. But sometimes Facebook gets ...
Playing favorites: Parents still involved after children are grown
Other Sciences / Social Sciences
Dec 07, 2009 |
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(PhysOrg.com) -- Middle-aged parents are more involved in their grown children's lives than ever, according to new research from Purdue University.
Scientists Generate Black Hole Radiation in the Lab
Dec 07, 2009 |
4.2 / 5 (22) |
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(PhysOrg.com) -- Due to their violent nature and long distance from Earth, black holes and their surroundings are very difficult to study. Currently, the main method to observe a black hole is to use an X-ray ...
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