News tagged with neural circuit
Imaging study shows how humor activates kids' brain regions
For the first time, researchers have scanned the brains of children watching funny videos to examine which of their brain regions are active as their sense of humor develops. The new findings from the Stanford University ...
Medicine & Health / Neuroscience
Feb 01, 2012 |
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Scientists map the frontiers of vision
There's a 3-D world in our brains. It's a landscape that mimics the outside world, where the objects we see exist as collections of neural circuits and electrical impulses.
Medicine & Health / Neuroscience
Jan 06, 2012 |
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Timing is key in the proper wiring of the brain: study
(Medical Xpress) -- After birth, the developing brain is largely shaped by experiences in the environment. However, neurobiologists at Yale and elsewhere have also shown that for many functions the successful ...
Medicine & Health / Neuroscience
Dec 19, 2011 |
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Researchers uncover steps in synapse building, pruning
Like a gardener who stakes some plants and weeds out others, the brain is constantly building networks of synapses, while pruning out redundant or unneeded synapses. Researchers at The Jackson Laboratory led by Assistant ...
Medicine & Health / Neuroscience
Nov 16, 2011 |
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Tiny worms change direction using two human-like neural circuits
(Medical Xpress) -- A University of Michigan biologist and his colleagues have found that the strategies used by the tiny C. elegans roundworm to control its motions are remarkably similar to those used by ...
Medicine & Health / Neuroscience
Nov 11, 2011 |
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New perspectives on sensory mechanisms
The latest Perspectives in General Physiology series examines the mechanisms of visual, aural, olfactory, and tactile processes that inform us about the environment. The series appears in the September 2011 ...
Aug 29, 2011 |
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Redefining how the brain plans movement
In 1991, Carl Lewis was both the fastest man on earth and a profound long jumper, perhaps the greatest track-and-field star of all time in the prime of his career. On June 14th of that year, however, Carl Lewis was human. ...
Medicine & Health / Neuroscience
Aug 10, 2011 |
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Elusive prey
Escape responses are some of the most studied behaviors by neurobiologists who want to understand how the brain processes sensory information. The ability to evade predators plays a vital role in the process of natural selection. ...
Jul 28, 2011 |
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Cutting-edge imaging techniques for neuroscientists available in latest laboratory manual
Neuroscientists have long pioneered the use of new visualization techniques. Imaging in Neuroscience: A Laboratory Manual continues that tradition by presenting an outstanding collection of methods for vi ...
Medicine & Health / Neuroscience
Jul 20, 2011 |
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'Optogenetics' used to control reward-seeking behavior
Using a combination of genetic engineering and laser technology, researchers at the University of North Carolina at Chapel Hill have manipulated brain wiring responsible for reward-seeking behaviors, such ...
Jun 29, 2011 |
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Advances in delivery of therapeutic genes to treat brain tumors
Novel tools and methods for delivering therapeutic genes to cells in the central nervous system hold great promise for the development of new treatments to combat incurable neurologic diseases. Five of the ...
Jun 27, 2011 |
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Competition between brain cells spurs memory circuit development
Scientists at the University of Michigan Health System have for the first time demonstrated how memory circuits in the brain refine themselves in a living organism through two distinct types of competition between cells.
Medicine & Health / Neuroscience
Jun 23, 2011 |
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Sight requires exact pattern of neural activity to be wired in the womb
The precise wiring of our visual system depends upon the pattern of spontaneous activity within the brain that occurs well before birth, a new study by Yale researchers shows.
Medicine & Health / Neuroscience
Jun 22, 2011 |
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Rising star of brain found to regulate circadian rhythms
The circadian system that controls normal sleep patterns is regulated by a group of glial brain cells called astrocytes, according to a study published online on April 14th in Current Biology, a Cell Press publication. Neuros ...
Apr 14, 2011 |
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Web-crawling the brain
The brain is a black box. A complex circuitry of neurons fires information through channels, much like the inner workings of a computer chip. But while computer processors are regimented with the deft economy of an assembly ...
Medicine & Health / Neuroscience
Mar 09, 2011 |
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Biological neural network
In neuroscience, a neural network describes a population of physically interconnected neurons or a group of disparate neurons whose inputs or signalling targets define a recognizable circuit. Communication between neurons often involves an electrochemical process. The interface through which they interact with surrounding neurons usually consists of several dendrites (input connections), which are connected via synapses to other neurons, and one axon (output connection). If the sum of the input signals surpasses a certain threshold, the neuron sends an action potential (AP) at the axon hillock and transmits this electrical signal along the axon.
In contrast, a neuronal circuit is a functional entity of interconnected neurons that influence each other (similar to a control loop in cybernetics).
For more information about Biological neural network, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
