IS `INSTANT REPLAY' A LEARNING TOOL?

The Boston Globe;  February 20, 2006 ;     700+ words ......Memory have managed to record such reverse replay signals from rats that ran laps on...journal Nature last week. And that "reverse replay" appears to occur only during pauses...fundamentally involved" in learning. In fact, reverse replay could help answer a central question...

REVERSE REPLAY --

The Boston Globe;  October 9, 1992 ;     33 words ...The long shadows of an autumn afternoon provide a second look at Aaron Smith (left), 11, and Paul Byrne, 13, playing a game of one-on-one yesterday on Boutwell Street in Dorchester. GLOBE STAFF PHOTO / TOM HERDE

Scientists Find Genetic Link to Risk-Taking Behavior

NPR All Things Considered;  January 1, 1996 ;     700+ words ......ere's something either pleasurable or interesting or both about a dopamine signal. RICHARD HARRIS: Scientists have identified the part of the brain that receives this dopamine signal. So, some of Benjamin's colleagues in Israel decided to see...

Early Parkinson's Diagnosis Possible With SPECT.(single-photon emission...

Family Practice News;  August 15, 2000 ;     289 words ......is a very sensitive way to measure dopaminergic neurons in the brain. Study results using this method have shown that the dopamine signal loss usually exceeds 55% before symptoms of Parkinson's disease (PD) become clinically apparent, Dr. John P. Seibyl said...

Titan's Proneura Technology Prevents Onset of Motor Complications In...

PR Newswire;  November 12, 2003 ;     700+ words ......dopamine in the striatum. In Parkinson's disease, the loss of neurons that provide dopamine to the striatum reduces this stable dopamine signal. Treatment with levodopa pills results in fluctuating dopamine levels, which are high immediately after administration...

Methamphetamine Delivers 'One-Two' Punch to Brain; Mechanism May Knock Out...

Ascribe Higher Education News Service;  December 3, 2001 ;     684 words ......enormous amount of dopamine, that all available dopamine receptors are activated, no matter how few there are. This very strong dopamine signal then becomes the only stimulus capable of boosting activity in the orbitofrontal cortex, Volkow said, making it very hard...

Short breaks while learning new task make it easier

The Hindustan Times;  February 13, 2006 ;     376 words ......By playing the pattern of activity backwards, those brain cells nearest the food fire first and at the same time as the dopamine signal. The idea is that this might etch the position of the food into the rats' brains. "It's saying, 'this is the place I want...

The Pleasure (and Pain) of "Maybe"

Natural History;  September 1, 2003 ;     700+ words ......dispensing doses of dopamine, a neurotransniitter closely associated with pleasure. Drugs such as cocaine increase the dopamine signal along this pathway, which is one reason they are so popular. Animals rigged up to get an electrical charge through the ventral...

Corporate snitch talks at U. Utah on addictive powers of nicotine

University Wire;  March 26, 1999 ;     700+ words ......bottom doesn't like yelling, so it puts on its ear muffs," DeNoble said. Consequently, the cell on bottom can't hear the dopamine signal until it is increased, or until the smoker intakes more nicotine. "A smoker's brain has an abnormal communication system...

Intra-Cellular Therapies Presents Data on Its Schizophrenia and Cognition...

PR Newswire;  February 15, 2008 ;     700+ words ......weight gain. About ITI-002 ITI-002 refers to a novel family of compounds that are potent inhibitors aimed at potentiating the dopamine signal in dopamine target neurons. The target enzyme regulated by ITI-002 is part of the D1 dopamine receptor signaling pathway...

Don't worry, Woody: anxiety is in the genes, study finds ...

The Independent - London;  August 11, 2008 ;     577 words ......people have this genetic make-up. The theory is that people with both copies of the met158 gene variant have a stronger dopamine signal in their brain, which results in an "inflexible attentional focus" - they cannot tear themselves away from an unpleasant...

Brain's 'reward system' may spur obesity

The Hindustan Times;  July 30, 2008 ;     480 words ......studies that obese individuals have reduced central dopamine receptors," he added. Pothos speculates that an attenuated dopamine signal may interfere with satiation, leading to overeating. Pothos and colleagues conducted their research using obesity-prone...

White mayor would slight blacks' needs, Palmer says

Chicago Sun-Times;  August 11, 1988 ;     422 words ......as black people should think of black people first." The effort to find a single black candidate is designed to avoid a reverse replay of the 1983 mayoral election, when Harold Washington became the first black mayor after two white candidates split the Democratic...

Cueto confusion shows need for more vision

The Independent on Sunday;  October 28, 2007 ;     700+ words ......took me a number of goes to get hold of him," said Dickinson. "Then I was saying, 'Stop, stop' for a freeze-frame on the reverse replay, and got no response. If you'd had a freeze-frame that would have made it easy for everybody." Football has so far steered...

Atomic Scientists Call for Halt to Research on New Types of Nuclear...

U.S. Newswire;  May 15, 1997 ;     700+ words ......wrote about "The Coming Neutron Bomb Threat." FAS President Jeremy J. Stone said that this letter was "twice historic, a reverse replay of the famous episode in which Albert Einstein wrote President Roosevelt about the possibility of an atomic weapon and...