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Latest Chemical synapse Stories

2011-04-28 00:22:20

Could veterans of war, rape victims and other people who have seen horrific crimes someday have the traumatic memories that haunt them weakened in their brains? In a new study, UCLA life scientists report a discovery that may make the reduction of such memories a reality. "I think we will be able to alter memories someday to reduce the trauma from our brains," said the study's senior author, David Glanzman, a UCLA professor of integrative biology and physiology and of neurobiology. The study...

2011-04-13 21:38:10

Model of Rett syndrome suggests a deficit in processing cues from the environment Rett syndrome, a neurodevelopmental disorder on the autism spectrum, is marked by relatively normal development in infancy followed by a loss of loss of cognitive, social and language skills starting at 12 to 18 months of age. It is increasingly seen as a disorder of synapses, the connections between neurons that together form brain circuits. What hasn't been clear is why children start out developing normally,...

2011-03-23 20:39:46

It is well established that environmental enrichment, providing animals with rich sensory, motor, and social stimulation, produces both dramatic increases in the number of synapses in the brain and enhanced learning. However, causal relationships between synapse formation and improved memory have not been definitively established. Now, a new study published by Cell Press in the March 24 issue of the journal Neuron introduces a valuable model system for investigating the role of synapse...

2011-03-22 08:16:03

(Ivanhoe Newswire) -- Scientists believe that long-term potentiation (LTP) "“ the long-lasting increase of signals across a connection between brain cells -- underlies our ability to remember over time and to learn, but how that happens is a central question in neuroscience. Researchers at Duke University Medical Center have found a cascade of signaling molecules that allows a usually very brief signal to last for tens minutes, providing the brain framework for stronger connections...

2011-03-21 13:10:52

You may remember the color of your loved one's eyes for years. But how? Scientists believe that long-term potentiation (LTP) "“ the long-lasting increase of signals across a connection between brain cells -- underlies our ability to remember over time and to learn, but how that happens is a central question in neuroscience. Researchers at Duke University Medical Center have found a cascade of signaling molecules that allows a usually very brief signal to last for tens of minutes,...

2011-02-18 12:31:04

Findings challenge conventional wisdom of how neurons operate Neurons are complicated, but the basic functional concept is that synapses transmit electrical signals to the dendrites and cell body (input), and axons carry signals away (output). In one of many surprise findings, Northwestern University scientists have discovered that axons can operate in reverse: they can send signals to the cell body, too. It also turns out axons can talk to each other. Before sending signals in reverse, axons...

2011-02-16 12:33:01

Scientists at Duke University Medical Center have uncovered clues to memory and learning by exploring the function of a single gene that governs how neurons form new connections. The finding may also provide insights into a form of human mental retardation. In a study published in the Journal of Neuroscience, the scientists explored the gene WRP's functions in the brain cell (neuron) and then demonstrated how acutely memory and learning are affected when WRP is missing in mice. "Human...

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2011-01-31 09:21:10

Among stem cell biologists there are few better-known proteins than nestin, whose very presence in an immature cell identifies it as a "stem cell," such as a neural stem cell. As helpful as this is to researchers, until now no one knew which purpose nestin serves in a cell. In a study published in the Jan. 30, 2011, advance online edition of Nature Neuroscience, Salk Institute of Biological Studies investigators led by Kuo-Fen Lee, PhD., show that nestin has reason for being in a completely...

2011-01-26 17:36:20

The research may lead to a better understanding of diseases such as autism and schizophrenia Connected highways of nerve cells carry information to and from different areas of the brain and the rest of the nervous system. Scientists are trying to draw a complete atlas of these connections"”sometimes referred to as the "connectome""”to gain a better understanding of how the brain functions in health and disease. New research conducted at The Scripps Research Institute shows that...

2011-01-13 17:26:55

Neuroscientists at MIT's Picower Institute of Learning and Memory have uncovered why relatively minor details of an episode are sometimes inexplicably linked to long-term memories. The work is slated to appear in the Jan. 13 issue of Neuron. "Our finding explains, at least partially, why seemingly irrelevant information like the color of the shirt of an important person is remembered as vividly as more significant information such as the person's impressive remark when you recall an episode...