False recall in older adults and Alzheimer's linked to attention, not memory, breakdown
...sociations; a thought or otherstimulus can spark a reaction along these networks and cause a flood ofinformation to be activated. Higher strategic processing skills are then required to sort through these jumbled recollections and associations,discarding those that seem out of touch with reality and focusing ...Aging alone does not affect brain system related to memory loss
... react more readily to stimulation. To measure the reaction of the rats' cholinergic systems to the stimulus ofdarkness and food, the researchers examined the release of acetylcholine (ACh),the crucial brain chemical that works within this system. The researchers examined both young adult rats (four to seven ...Scientists capture images of brain in action as it's learning
...ystem of activity, and also noimprovement in their reaction times. "This study actually catches the brain in the act of becoming aware andlearning," says Dr. Sandra Black, Head of Neurology and Senior Scientist in theAging Research Program at Sunnybrook and Women's College Health Sciences Centre. "For those p...New biological target identified for cholesterol-lowering drugs
...ng body of evidencethat inflammation -- the body's reaction to injury -- plays an important role inthe development of heart disease," says Eugene Braunwald, M.D., professor ofmedicine at Harvard University and co-author of the study conducted at Brighamand Women's Hospital and Harvard Medical School. "One of ...Keep an eye on the weather if you take herbal antidepressants
...the herb's side effect, however.Hypericin's strong reaction with light is currently being investigated as atreatment for some skin cancers. "Its side effect is being used as a potentialtherapy for killing cancer cells," says Roberts....Walking markedly improves mental abilities of those over 60
...nal oxygen taken in duringwalking triggered faster reaction times and heightened the ability to ignoredistractions when completing a variety of mental tasks on a computer. "The nice result of our study is that a person who has not been physicallyactive during his or her younger years still can benefit by walk...Chronic, heavy cocaine use associated with long-lasting impaired function
...ng. The heaviest cocaine usersshowed slower median reaction times and poorer attention and concentration....Chill out: it does the heart good
...h emotional responsivity doescause a physiological reaction - elevated blood pressure. The Duke team is already enrolling patients in a new clinical trial teachingbehavioral modification techniques to their heart patients....LSU scientist says new drug will save brain cells attacked by neurological injury or disease
...se-2 (COX-2). Injury or disease triggers a chain reaction thatsignals the gene to produce the chemical messenger RNA, which in turn instructsthe gene to produce the killer protein. His new drug prevents the productionof COX-2 and stops the signaling process before the genes can be affected. Bazan's disco...Injured elite athletes need team support
...ound the athletes were surprised bytheir emotional reaction to their injury, frustrated by the perceived lack ofinformation they were receiving, discouraged by the initial slow gains intherapy and were worried about losing their physical prowess. She also foundthat, after initial pain and depression, athletes...Brain chemical mellows male mice, but makes mouse moms tough
...d of attack, it was so mild that itproduced little reaction in the male mice." When exposed to the attacks andbites of normal females, males either fought back or fled. To see if the genetic alteration had affected other aspects of maternalbehavior, Gammie and Nelson gave mice from both groups a "pup retrieva...UNC-CH nutrition expert says nation should regulate some diet supplements
...t harming a lot of people could result in a public reaction that woulddamage the entire supplement industry just as the thalidomide debacle injuredthe drug industry years ago. "In addition, with no requirement to show efficacy or safety, corporateinvestments in research and development of better nutra...UCSF finding could lead to a new class of painkillers
...out the enzyme exhibited a "significantly reduced" reaction to stimulation. In a second study, the researchers applied the chemical irritant acetic acid. The response to the painful stimulus, which causes inflammation, was "almost completely blocked" in the mice lacking PKC, they said. In a third study, the r...U.S., Mexican scientific societies honor former Penn State professor
...ker manipulated this newstructure using a chemical reaction sequence known as "degradation," to yieldprogesterone. This process of producing progesterone is now known as the MarkerDegradation. Sarsasapogenin, however, was still an expensive starting material. Marker embarked on an extensive search for a ch...Decreased pain perception may help to identify hypertension risk
...ting blood pressure, or exaggerated cardiovascular reaction tostress." The research appears in the November issue of Psychophysiology. "From a theoretical perspective, attempts to understand the biological basis ofhypoalgesia may lead to new insights into understanding the mechanisms ofhypertension," said Fr...Material that made car bumpers shine finds a role in manufacture of drugs, dyes
...be used toenergize a rare solid-to-solid catalytic reaction that makes it possible toproduce a huge variety of anilines simultaneously. Chromium chloride shuttlesback and forth between two solid substrates, converting raw materials toanilines. "You can't just bang two solids up against each other and ...Nausea from anesthesia plummets with extra oxygen
...cause nausea and vomiting. This is thought to be a reaction evolved torid the body of possibly life-threatenin...ds, many surgical patients have an unconscious gut reaction to whatis happening in their intestines, and their evolved response is nausea andvomiting to rid the...Southeast appears to have a unique type of Lyme disease
... Tests included the sophisticated polymerase chain reaction assay for spirochete DNA in biopsy samples; the PCR was positive in five of 23 cases. "These data say yes, there is some Lyme disease here that meets the criteria of current national lab testing standards. Yet the majority of cases-- seven out of ...Pets can tame high blood pressure
...wever, does not have any effect on an individual's reaction to stress, says Allen. The medication helped to lower the stockbrokers' blood pressure to normal levels averaging 122/76 mm Hg.At the beginning of the experiment, prior to the stress tests, the researchers randomly selected half of the subjects to g...Scientific societies honor creation of the Mexican steroid hormone industry
.... He manipulated this structure, using a chemical reaction sequence known as "degradation," to yield progesterone. The process is now known as the Marker Degradation. Marker dropped out of public life in the 1950s, re-emerging to accept awards from the Mexican Chemical Society in 1969 and the Chemical Cong...