News tagged with neurons
Serial killing follows predictable pattern based on brain activity
(PhysOrg.com) -- Over a period of 12 years, Andrei Chikatilo murdered at least 53 people before being arrested in Rostov, Russia, in 1990. While Chikatilo’s killings, mainly of women and children, may ...
Jan 18, 2012 |
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Stephen Hawking to turn 70, defying disease
British scientist Stephen Hawking has decoded some of the most puzzling mysteries of the universe but he has left one mystery unsolved: How he has managed to survive so long with such a crippling disease.
Jan 05, 2012 |
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Entomologists discover first instance of intact neurons without nucleus - in fairy wasps
Fairy wasps are really tiny; so tiny, they can barely be seen with the naked eye. They’re so tiny that they’re the smallest organism when shown on a slide alongside an amoeba and a Paramecium. And because of this, ...
Dec 01, 2011 |
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Physicists 'turn signals' for neuron growth
(PhysOrg.com) -- A new paper scheduled for publication in the January issue of Nature Photonics describes the use of spinning microparticles to direct the growth of nerve fiber, a discovery that could allow ...
Dec 15, 2011 |
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Seeing without eyes: Hydra stinging cells respond to light
In the absence of eyes, the fresh water polyp, Hydra magnipapillata, nevertheless reacts to light. They are diurnal, hunting during the day, and are known to move, looping end over end, or contract, in res ...
Mar 04, 2012 |
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Silkmoth inspires novel explosive detector
Imitating the antennas of the silkmoth, Bombyx mori, to design a system for detecting explosives with unparalleled performance is the feat achieved by a French research team. Made up of a silicon microcantilever ...
Chemistry / Analytical Chemistry
14 hours ago |
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Bats, dolphins, and mole rats inspire advances in ultrasound technology
Sonar and ultrasound, which use sound as a navigational device and to paint accurate pictures of an environment, are the basis of countless technologies, including medical ultrasound machines and submarine ...
Nov 14, 2011 |
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Aging-related degeneration caused by defects of energy metabolism in tissue stem cells?
Aging-related tissue degeneration can be caused by mitochondrial dysfunction in tissue stem cells. The research group of Professor Anu Suomalainen Wartiovaara in Helsinki University, with their collaborators in Max Planck ...
Jan 03, 2012 |
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Teamwork made Man brainier, say scientists
Learning to work in teams may explain why humans evolved a bigger brain, according to a new study published on Wednesday.
Apr 11, 2012 |
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'Unwell' Stephen Hawking misses 70th birthday event
British scientist Stephen Hawking was forced to miss a scientific debate to mark his 70th birthday Sunday due to ill health but sent an upbeat message saying he was living at a "glorious time".
Jan 08, 2012 |
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In the brain, 'ORMOSIL' nanoparticles hold promise as a potential vehicle for drug delivery
(PhysOrg.com) -- In the images of fruit flies, clusters of neurons are all lit up, forming a brightly glowing network of highways within the brain.
Nanotechnology / Bio & Medicine
Jan 09, 2012 |
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A unique on-off switch for hormone production
Weizmann scientists have revealed a new kind of on-off switch in the brain for regulating the production of a main biochemical signal from the brain that stimulates cortisol release in the body.
Feb 23, 2012 |
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How the worm knows where its nose is
For decades, scientists have studied Caenorhabditis elegans – tiny, transparent worms – to glean clues about how neurons develop and function. A new Harvard study suggests that the worms' nervous system is much m ...
May 16, 2012 |
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How the brain cell works: A dive into its inner network
University of Miami biology professor Akira Chiba is leading a multidisciplinary team to develop the first systematic survey of protein interactions within brain cells. The team is aiming to reconstruct genome-wide ...
Dec 21, 2011 |
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Scientists identify protein form linked to Huntington's disease
Scientists at the Gladstone Institutes have discovered how a form of the protein linked to Huntington's disease influences the timing and severity of its symptoms, offering new avenues for treating not only this disease, ...
Oct 30, 2011 |
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Neuron
A neuron (pronounced /ˈnjʊərɒn/ N(Y)OOR-on, also known as a neurone or nerve cell) is an excitable cell in the nervous system that processes and transmits information by electrochemical signalling. Neurons are the core components of the brain, the vertebrate spinal cord, the invertebrate ventral nerve cord, and the peripheral nerves. A number of specialized types of neurons exist: sensory neurons respond to touch, sound, light and numerous other stimuli affecting cells of the sensory organs that then send signals to the spinal cord and brain. Motor neurons receive signals from the brain and spinal cord and cause muscle contractions and affect glands. Interneurons connect neurons to other neurons within the same region of the brain or spinal cord. Neurons respond to stimuli, and communicate the presence of stimuli to the central nervous system, which processes that information and sends responses to other parts of the body for action. Neurons do not go through mitosis, and usually cannot be replaced after being destroyed, although astrocytes have been observed to turn into neurons as they are sometimes pluripotent.
For more information about Neuron, read the full article at
Wikipedia.
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