Brain
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PsychologyWhat part of us knows right from wrong?
Our conscience may have evolved from our need to cooperate. Scientists are learning where the brain’s moral centers are, and how they make us human.
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BrainExpecting pain? That could really make it hurt worse
How much someone expects something to hurt affects how their brain processes the pain, and how well they learn from it.
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BrainMarijuana 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.
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BrainScientists 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.
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BrainSleepless nights can leave brains feeling anxious
Pulling an all-nighter boosts anxiety levels — and changes brain activity — the next morning, a new study finds.
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BrainZaps 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.
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BrainYoung 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.
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BrainPeople may be literally led by their noses
The brain links people’s senses of nagivation and smell, according to a new study.
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BrainHow 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.
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BrainThe 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.
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BrainLess 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.
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Health & MedicineTeens’ 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.