Stick recording electrodes into numerous species' amygdalaefn9 and see when neurons there have action potentials; this turns out to be when the animal is being aggressive.fn10 In a related approach, determine which brain regions consume extra oxygen or glucose, or synthesize certain activity-related proteins, during aggression-the amygdala tops the list.
( Robert M. Sapolsky )
[ Behave: The Biology of Humans ]
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