Word: brainful
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Beefing up the brain for combat is one aspect of the training; another is decompression. If one day you're dodging snipers in Iraq and the next you're strolling the aisles at Wal-Mart, Warrior Mind Training techniques can ease the transition...
...than it normally would. That in turn could cause fluctuations in numerous hormones, including an increase in ghrelin and a decrease in leptin - the two key hormones that govern appetite and satiety. The hunger hormone ghrelin, which is produced by the stomach, sends a "feed me" message to the brain; leptin, the satiety hormone, signals the brain to stop eating. (See a special report on the science of appetite...
iPhones • possible availability of to carriers other than the abysmal-service-providing AT&T means people may finally be able to have actual conversations on, which would be even more exciting if a new study hadn't just come out suggesting that cell phones cause brain cancer...
...except, of course, when sex is a possibility. Which explains why so many introductions in bars go wrong. One party's amygdalae gets primed by proximity even as the other party's amygdalae submit to a more primal force: the need to procreate. (Past research has shown that the brain's limbic system, which includes the amygdalae, lights up in response to sexually arousing stimuli - not surprisingly, more vigorously in men than in women...
Because the new paper is mostly based on one unusual subject, it shouldn't be overinterpreted. But the findings may have relevance for research into autism, whose sufferers sometimes have trouble understanding personal space and are thought to have amygdalae impairment. Previous studies of SM show that her brain impairment makes it difficult for her to recognize expressions of fear or judge a person's trustworthiness - problems that are also common among people with autism. Researchers think people who suffer from extreme shyness may turn out to have a problem in their temporal lobes as well. There's no known...