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Stress study offers clues for new antidepressant drugs

By Kate Kelland LONDON (Reuters) - Scientists have worked out the way in which stress hormones reduce the number of new brain cells - a process linked to depression - and say their work should help researchers develop more effective antidepressants. The scientists identified a protein largely responsible for the long-term detrimental effect of stress on cells.

Study shows that adventure shapes the individual

The act of exploring helps shape the brain and adventuring is what makes each individual different, according to a study out Thursday by researchers in Germany. The findings published in the US journal Science may offer new paths to treating psychiatric diseases, scientists said. Researchers sought to pin down why identical twins are not perfect replicas of each other, even when they have been raised in the same environment, and studied the matter using 40 genetically identical mice.

Study shows that adventure shapes the individual

The act of exploring helps shape the brain and adventuring is what makes each individual different, according to a study out Thursday by researchers in Germany. The findings published in the US journal Science may offer new paths to treating psychiatric diseases, scientists said. Researchers sought to pin down why identical twins are not perfect replicas of each other, even when they have been raised in the same environment, and studied the matter using 40 genetically identical mice.

Brain pacemaker to treat acute depression

Researchers have successfully implanted pacemaker electrodes into the brains of patients suffering from major depression, with symptoms of six out of seven of them improving considerably and rapidly. Dr Volker Arnd Coenen, neurosurgeon at the Department of Neurosurgery at the Bonn University Hospital in Germany, implanted electrodes into the medial fore-brain bundles in the brains of subjects suffering from major depression with the electrodes being connected to a brain pacemaker. The nerve cells were then stimulated by means of a weak electrical current, a method called Deep B

Analysis - Big brain projects highlight drug research gaps

By Ben Hirschler and Kate Kelland LONDON (Reuters) - Governments on both sides of the Atlantic are placing big new bets on the future of brain science, just as much of the pharmaceutical industry retreats from the field. Brain disorders ranging from depression to Alzheimer's are extracting an ever greater social and economic cost across the globe. But while the United States and European Union are funding ambitious efforts in neuroscience, the private sector is often sceptical about the prospect of rapid breakthrough cures.

Japan scientists can 'read' dreams

Scientists in Japan said Friday they had found a way to "read" people's dreams, using MRI scanners to unlock some of the secrets of the unconscious mind. Researchers have managed what they said was "the world's first decoding" of night-time visions, the subject of centuries of speculation that have captivated humanity since ancient times.

Scientists link two rats' brains, a continent apart

Creating a "superbrain" of connected minds, scientists on Thursday said they had enabled a rat to help a fellow rodent while the animals were a continent apart but connected through brain electrodes. With electrodes imbedded in its cortex, a rat in a research institute in Natal, Brazil sent signals via the Internet to a counterpart at a university lab in Durham, North Carolina, helping the second animal to get a reward. The exploit opens up the prospect of linking brains among animals to create an "organic computer," said Brazilian neurobiologist Miguel Nicolelis.

RPT-'Mind melds' move from science fiction to science in rats

(Refiles to add dropped quote mark in headline) By Sharon Begley NEW YORK, Feb 28 (Reuters) - The scientists call it a "brain link," and it is the closest anyone has gotten to a real-life "mind meld": the thoughts of a rat romping around a lab in Brazil were captured by electronic sensors and sent via Internet to the brain of a rat in the United States.

Study of half awake seals may help people sleep better

Scientists have identified brain chemicals that allow seals to sleep with half of their brain at a time, according to a study published in the Journal of Neuroscience. And they say the discovery of how what they called a "unique biological phenomenon" works may help millions -- including an estimated 40 percent of North Americans -- who suffer from insomnia or other sleep disorders. "It could help solve the mystery of how and why we sleep," said the study's senior author Jerome Siegel of UCLA's Brain Research Institute.

CORRECTED-UPDATE 2-Lilly drug chosen for US-sponsored Alzheimer's trial

(Corrects seventh paragraph to say Amyvid was approved in Europe this week, instead of awaiting approval in Europe) * Researchers aim for 30 pct slowing in cognitive decline * Volunteers to be selected using Lilly brain-amyloid test * Lilly shares rise 0.5 percent By Ransdell Pierson
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