New Scientist: Was it a huge dose of dopamine that made us so smart?
From Andy Coghlan at New Scientist: We may owe some of our unique intelligence to a generous supply of a signalling chemical called dopamine in brain regions that help us think and plan. Our brains produce far more dopamine in these regions than the brains of other primates like apes.More. Naturalist ideology requires something like extra dopamine production to be seen as a cause, not an effect. Of course, what we are really talking about is human consciousness, whose origin no one understands. And whatta feast of just-so science! See also: Human/primate evolution: Eating fruit led to bigger brains? Climate change made us smart Retroviruses play a role in development of human brain? Tooth size not linked to brain size in early humans Read More ›