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Latest Inhibitory postsynaptic potential Stories

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2010-07-31 06:35:00

Neuroscientists have long wondered how individual connections between brain cells remain diverse and "fit" enough for storing new memories. Reported in the prestigious science journal Neuron, a new study led by Dr. Inna Slutsky of the Sackler School of Medicine at Tel Aviv University describes what makes some memories stick. The key is GABA (ÃŽ³-Aminobutyric acid), a natural molecule that occurs in the brain, which could be the main factor in regulating how many new memories...

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2010-06-16 13:57:51

The adult brain, long considered to be fixed in its wiring, is in fact remarkably dynamic. Neuroscientists once thought that the brain's wiring was fixed early in life, during a critical period beyond which changes were impossible. Recent discoveries have challenged that view, and now, research by scientists at Rockefeller University suggests that circuits in the adult brain are continually modified by experience. The researchers, led by Charles D. Gilbert, Arthur and Janet Ross Professor and...

2010-02-16 15:37:37

Ion channels traditionally thought to work independently actually work in sync Investigators in the Hotchkiss Brain Institute, Faculty of Medicine, have made a major breakthrough in our understanding of nerve impulse generation within the brain. Brain cells communicate with each other by firing electrical impulses, which in turn rely upon special ion channels that are positioned at strategic locations in their membranes. This exciting, new foundational research was published this week in the...

2010-02-02 09:28:14

A fundamental function of neurons "“ key brain cells "“ is the release of hormones and chemicals called neurotransmitters that contain chemical messages. Until recently, experts were perplexed about the role of small proteins called complexins. Did they help or hinder the release of these important proteins? In a recent report, Baylor College of Medicine researchers answered the question. They do both, depending on the species in which they are active. A balance "The balance...

2010-01-14 12:52:18

Our energy-hungry brains operate reliably and efficiently while processing a flood of sensory information, thanks to a sort of neuronal thermostat that regulates activity in the visual cortex, Yale researchers have found. The actions of inhibitory neurons allow the brain to save energy by suppressing non-essential visual stimuli and processing only key information, according to research published in the January 13 issue of the journal Neuron. "It's called the iceberg phenomenon, where only...

2009-12-28 17:11:09

 Scientists have created what appears to be a schizophrenic mouse by reducing the inhibition of brain cells involved in complex reasoning and decisions about appropriate social behavior. Findings by Medical College of Georgia scientists, published Dec. 28 in PNAS, elucidate the critical balance between excitation and inhibition of these cells that appears to go awry in schizophrenia. They also provide the first animal model for studying the disabling psychiatric disorder that affects...

2009-10-22 12:53:07

New study published in Biological Psychiatry There are increasingly precise molecular insights into ways that stress exposure leads to fear and through which fear extinction resolves these fear states. Extinction is generally regarded as new inhibitory learning, but where the inhibition originates from remains to be determined. Gamma-aminobutyric acid (GABA), the primary inhibitory chemical messenger in the brain, seems to be very important to these processes. A new article in Biological...

2009-09-16 14:01:50

Technique targeting light-gated channels to enigmatic neurons proves role in burst swimming A new way to select and switch on one cell type in an organism using light has helped answer a long-standing question about the function of one class of enigmatic nerve cells in the spinal cord. Through targeted insertion of light-sensitive switches into these cells in awake zebrafish larvae, University of California, Berkeley, and UC San Francisco scientists have found that these mysterious cells...

2009-08-13 15:45:00

Research has implications for medical use of drug and concepts of chronic pain Imagine that you're working on your back porch, hammering in a nail. Suddenly you slip and hit your thumb instead "” hard. The pain is incredibly intense, but it only lasts a moment. After a few seconds (and a few unprintable words) you're ready to start hammering again.How can such severe pain vanish so quickly? And why is it that other kinds of equally terrible pain refuse to go away, and instead...

2009-07-03 08:53:03

Why do some people who take the sleep aid Ambien sleepwalk and engage in other activities they don't recall in the morning?Researchers from Georgetown University Medical Center are helping explain the phenomenon. In an animal study, they found inhibitory neurons responsible for stopping neural activity are shut down by the drug. But excitatory neurons, which transmit activity, are free to wake up, and because the inhibitory neurons responsible for keeping them in check are effectively asleep...


Word of the Day
bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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