اتحادیه پزشکان جوان

TETCHY people might calm down if they had more of the neurotransmitter serotonin. Researchers gave 19 healthy volunteers a diet that reduced their serotonin levels and then scanned their brains. They found that communication between the brain's amygdala regions, which process fear, and its restraini...

Human brain However, fossil discoveries show that millions of years after early hominids became bipedal, they still had small brains. It was only round 2.5 million years ago that our brains began to get bigger. We still don't know why, but it's possible that a mutation weakened our forbears' jaw mus...

H5N1 bird flu can kill humans, but has not gone pandemic because it cannot spread easily among us. That might change: five mutations in just two genes have allowed the virus to spread between mammals in the lab. What's more, the virus is just as lethal despite the mutations."The virus is transmitted...

Imagine walking away from a doctor's office with a prescription to play a video game. Brain Plasticity, the developer of a cognitive training game, has begun talks with the Food and Drug Administration (FDA) to market the game as a therapeutic drug.Brain Plasticity has been fine-tuning a game to hel...

THE beating rhythm of human heart cells can be controlled using light. Researchers at Stanford University in California inserted a gene found in algae into human embryonic stem cells, then made the cells differentiate into heart muscle cells. The gene produces a light-sensitive protein called channe...