quiet-the-power-of-introverts-in-a-world-that-cant-stop-talking-susan-cain

drop dead of starvation. Cocaine and
heroin, which stimulate dopamine-releasing
neurons in humans, make
people euphoric.
Extroverts’ dopamine pathways appear
to be more active than those of introverts.
Although the exact relationship
between extroversion, dopamine,
and the brain’s reward system has not
been conclusively established, early
findings have been intriguing. In one
experiment, Richard Depue, a neurobiologist
at Cornell University, gave an
amphetamine that activates the dopamine
system to a group of introverts and
extroverts, and found that the extroverts
had a stronger response. Another
study found that extroverts who win
gambling games have more activity in
the reward-sensitive regions of their
brains than victorious introverts do.
Still other research has shown that the
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