Brain
- Brain
Marijuana use may affect decision-making areas in teen brains
Marijuana use during adolescence may damage decision-making areas of the brain, according to a new study in rats.
- Brain
Scientists Say: Opioid
Opioid drugs work in the brain to stop pain. But the drugs also produce pleasure, which can make people want to take them over and over again.
- Health & Medicine
Sleepless nights can leave brains feeling anxious
Pulling an all-nighter boosts anxiety levels — and changes brain activity — the next morning, a new study finds.
- Brain
Zaps to spinal cord help paralyzed people walk
Sending electrical pulses to the spinal cord can help paralyzed people learn to walk again, new tests show.
- Brain
Young people’s memory improves after stopping marijuana use
Paying teens and young adults to stop using marijuana improved their memory within one week. The results hint that some impairments from pot may be reversible — at least for a time.
- Brain
People may be literally led by their noses
The brain links people’s senses of nagivation and smell, according to a new study.
- Brain
How your brain is like a film editor
A brain structure called the hippocampus may slice our ongoing lives into distinct chunks so that they can then be stored as memories.
- Brain
The immune system has a say in how hard ‘teen’ rats play
“Teen” rats like to wrestle. A new study shows the brain’s immune system might trigger changes that morph this desire for rough-and-tumble play into the calm of adulthood.
- Brain
Less screentime linked to better memory, learning in kids
Kids ages eight to 11 spend an average of 3.6 hours a day on screens, a new study shows. But the best thinking scores come from kids who average fewer than two hours a day of screen time.
- Health & Medicine
Teens’ cell phone use linked to memory problems
A new study suggests teens who get more exposure to cell-phone radiation — and hold their phones up to their right ear — do worse on one type of memory test.
- Brain
Football and hockey don’t necessarily doom players’ brains to serious damage
A broad look at the brains and behavior of retired pro football players and hockey players finds no signs of early dementia.
- Brain
Body heat due to exercise may reduce hunger
Why aren’t animals hungry after a workout? Brain cells that control appetite may sense the exercise heat — and keep you out of the kitchen, a new study finds.
