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Latest Chemical synapse Stories

62f5d58593fcd299824f28f23ecd3adc1
2008-11-18 14:58:38

Scientists say the identification of a specific molecule could be key to understanding the cause of motor neuron disease (MND) and other neurodegenerative disorders. The study of the molecule, Wnt3, raises the hope of new treatments being developed. The London-based researchers said the molecule plays a key role in establishing connections between nerve cells and the muscles they control and that these connections become progressively weaker in MND patients. Without properly-formed...

2008-10-27 15:00:27

U.S. scientists say they've found the nervous system uses a specific type of signal to produce stable retinal images despite vigorous head movements. Researchers at the Salk Institute for Biological Studies said that in most nerve cells, an electrical signal reaching the end of a cell releases molecules called neurotransmitters that travel across the synapse -- the space between nerve cells -- and may or may not trigger an electrical signal in an adjacent cell. "Most known synapses act as...

7e3c95f81474c4f38fcb0445cf59fd671
2008-08-02 11:45:00

New research has uncovered a fundamental cellular mechanism that may drive pathological drug-seeking behavior. The study, published by Cell Press in the July 31 issue of the journal Neuron, examines the brain's reward circuitry and details strikingly distinct influences of self-administered cocaine compared to natural rewards or passive cocaine injection. Dopamine (DA) neurons residing within the ventral tegmental area (VTA) of the brain are a key part of the brain's natural reward pathway...

2ae4a7c3660bbce1e0db34ffd5e8809e1
2008-06-19 12:14:11

UCLA cellular neuroscientists are providing new insights into the mechanisms that underlie long-term memory "” research with the potential to treat long-term memory disorders. "The more we know about how long-term memory is induced in the brain and how our memories are maintained in the brain, the more we are going to be able to treat long-term memory loss," said David Glanzman, UCLA professor of physiological science and neurobiology, whose new research appears June 19 in the early...

e255fc7e58ddfdad83af9aae7937a05f1
2008-03-31 09:42:22

A protein called Pum regulates the expression of genes that alter synaptic plasticityTo lock in a memory, nerve cells must strengthen their connections with some neighbors but not others. Three research groups at Cold Spring Harbor Laboratory (CSHL) have collaborated to identify a protein whose action helps alter the strength of synaptic connections in fruit flies as they form memories.Synapses are the tiny gaps across which information crosses between nerve cells. Changes in the strength of...

4c0dd2271f3c6ea9b7c46327a95226691
2008-01-21 10:30:14

MADISON "“ Most people know it from experience: After so many hours of being awake, your brain feels unable to absorb any more -- and several hours of sleep will refresh it. Now new research from the University of Wisconsin School of Medicine and Public Health clarifies this phenomenon, supporting the idea that sleep plays a critical role in the brain's ability to change in response to its environment. This ability, called plasticity, is at the heart of learning. Reporting in the Jan....

2005-12-08 18:45:00

By Anthony J. Brown, MD NEW YORK (Reuters Health) - When someone suffers a stroke, 1.9 million nerve cells in the brain die each minute, and the oxygen-starved brain ages about 3.6 years each hour -- further emphasizing the need for rapid treatment -- researchers say. "'Time is brain' is a popular saying: clinical outcomes have been shown to deteriorate the longer treatment is delayed," study author Dr. Jeffrey L. Saver, from the University of California in Los Angeles, told Reuters Health....

14d5e924791fd454eaee89e0243230701
2005-12-08 18:45:00

By Anthony J. Brown, MD NEW YORK -- When someone suffers a stroke, 1.9 million nerve cells in the brain die each minute, and the oxygen-starved brain ages about 3.6 years each hour -- further emphasizing the need for rapid treatment -- researchers say. "'Time is brain' is a popular saying: clinical outcomes have been shown to deteriorate the longer treatment is delayed," study author Dr. Jeffrey L. Saver, from the University of California in Los Angeles, told Reuters Health. However, he...

2005-11-15 16:30:32

The ability of the brain to transmit and process information requires a lifelong commitment to maintaining the integrity of synapses--the special connections that permit the passage of nerve impulses from one nerve cell to another, according to investigators at St. Jude Children's Research Hospital and colleagues in Hokkaido University School of Medicine (Japan). A report on this work appears in the November 15 issue of Nature Neuroscience. This long-term commitment requires proteins called...

2005-11-01 14:50:00

AUSTIN, Texas--Neurons experience large-scale changes across their dendrites during learning, say neuroscientists at The University of Texas at Austin in a new study that highlights the important role that these cell regions may play in the processes of learning and memory. The research, published online Oct. 23 and in the November issue of the journal Nature Neuroscience, shows that ion channels distributed in the dendritic membrane change during a simulated learning task and that this...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.