'Time Stamp' in Brain Cells Encodes Memories
MedicineNet.com Thu, 29 Jan 2009 12:27 PM PST
Title: 'Time Stamp' in Brain Cells Encodes Memories Category: Health News Created: 1/29/2009 2:00:00 AM Last Editorial Review: 1/29/2009 |
Study: Diabetes Gums Up The Brain
KOLR - KSFX Ozarks Thu, 29 Jan 2009 11:49 AM PST
Diabetes starves the brain of badly needed blood sugars, greatly speeding its decline and spiking the risk of Alzheimer's. "USA Today" reports that scientists are in widespread agreement that whatever diabetes does to the brain, it isn't good. |
Readers Build Vivid Mental Simulations Of Narrative Situations, Brain Scans Suggest
Medical News Today Thu, 29 Jan 2009 11:04 AM PST
A new brain-imaging study is shedding light on what it means to "get lost" in a good book - suggesting that readers create vivid mental simulations of the sounds, sights, tastes and movements described in a textual narrative while simultaneously activating brain regions used to process similar experiences in real life. |
Lulling The Brain To Sleep Requires Support Cells, Not Neurons
Medical News Today Thu, 29 Jan 2009 9:05 AM PST
Brain cells called astrocytes help to cause the urge to sleep that comes with prolonged wakefulness, according to a study in mice, funded by the National Institutes of Health. The cells release adenosine, a chemical known to have sleep-inducing effects that are inhibited by caffeine. |
Penn Study: Brain Structure Assists In Immune Response
Medical News Today Thu, 29 Jan 2009 9:06 AM PST
For the first time, a team of researchers at the University of Pennsylvania School of Veterinary Medicine have imaged in real time the body's immune response to a parasitic infection in the brain. |
MIT IDs genes linked to Parkinson's side effects
EurekAlert! Thu, 29 Jan 2009 11:48 AM PST
( Massachusetts Institute of Technology ) MIT researchers and colleagues have identified two molecules whose expression in the brain is altered in the brains of animals with side effects related to Parkinson's disease. The results may lead to new approaches to the treatment of these side effects in Parkinson's patients |
Serotonin brings locusts together
EurekAlert! Thu, 29 Jan 2009 11:12 AM PST
( American Association for the Advancement of Science ) Researchers have linked the radical transformation of desert locusts -- from harmless, solitary creatures to gregarious, swarm-forming insects -- to the common brain chemical serotonin. This discovery illuminates a mechanism within these desert locusts that initiates their switch from aversion to attraction, and may open the door to new ... |
What Causes Motor Complications of Parkinson's Treatment?
Newswise Thu, 29 Jan 2009 12:26 PM PST
An MIT study identifies two related genes linked to L-DOPA-induced dyskinesia in a rat model of Parkinson's disease. The expression of these two related CalDAG-GEF genes is altered in opposite ways in the striatum brain region of animals with dyskinesias. The results may lead to new approaches to the treatment of dyskinesias in Parkinson's patients. |
Scientists ID genes linked to Parkinson's side effects
PhysOrg Thu, 29 Jan 2009 11:58 AM PST
People with Parkinson's disease commonly suffer a slowing or freezing of movement caused by the death of neurons that make dopamine, a key chemical that allows brain cells to send and receive messages essential to voluntary movements. Patients regain the ability to move, seemingly miraculously, by taking L-DOPA or related drugs that mimic the missing dopamine. After a few years on L-DOPA, ... |
Common chemical causes locusts to swarm
The San Luis Obispo Tribune Thu, 29 Jan 2009 11:12 AM PST
By By RANDOLPH E. SCHMID -- A chemical that affects people's moods also can transform easygoing desert locusts into terrifying swarms that ravage the countryside, scientists report. "Here we have a solitary and lonely creature, the desert locust. But just give them a little serotonin, and they go and join a gang," observed Malcolm Burrows of the University of Cambridge in England. The brain ... |
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