In the brain, these thoughts can often be traced to overreactivity in the amygdala, a small site in the middle of the brain that, among its many other functions, responds to novelty and threat. When the amygdala works as it should, it orchestrates a physiological response to changes in the environment. That response includes heightened memory for emotional experiences and the familiar chest pounding of fight or flight. But in people born with a particular brain circuitry, the kind seen in Kagan’s high-reactive study subjects, the amygdala is hyperreactive, prickly as a haywire motion-detector light that turns on when nothing’s moving but the rain. Other physiological changes exist in children with this temperament, many of them also related to hyperreactivity in the amygdala. They have a tendency to more activity in the right hemisphere, the half of the brain associated with negative mood and anxiety; greater increases in heart rate and pupil dilation in response to stress; and on occasion higher levels of the stress hormones cortisol and norepinephrine.
thinkahol * on 20 May 11"Those who make peaceful evolution impossible make violent revolution inevitable."- John F. KennedyThere's one thing for sure: 2008 isn't anything like politics as usual.The corporate media (with their unerring eye for the obvious point) is fixated on the narrative that, for the first time ever, Americans will likely end this year with either a woman or a black man headed for the White House. Bloggers are telling stories from the front lines of primaries and caucuses that look like something from the early 60s - people lining up before dawn to vote in Manoa, Hawaii yesterday; a thousand black college students in Prairie View, Texas marching 10 miles to cast their early votes in the face of a county that tried to disenfranchise them. In recent months, we've also been gobstopped by the sheer passion of the insurgent campaigns of both Barack Obama and Ron Paul, both of whom brought millions of new voters into the conversation - and with them, a sharp critique of the status quo and a new energy that's agitating toward deep structural change.There's something implacable, earnest, and righteously angry in the air. And it raises all kinds of questions for burned-out Boomers and jaded Gen Xers who've been ground down to the stump by the mostly losing battles of the past 30 years. Can it be - at long last - that Americans have, simply, had enough? Are we, finally, stepping out to take back our government - and with it, control of our own future? Is this simply a shifting political season - the kind we get every 20 to 30 years - or is there something deeper going on here? Do we dare to raise our hopes that this time, we're going to finally win a few? Just how ready is this country for big, serious, forward-looking change?Recently, I came across a pocket of sociological research that suggested a tantalizing answer to these questions - and also that America may be far more ready for far more change than anyone really believes is possible at this moment. In fac
