Neurochemically the hemispheres differ in their sensitivity to hormones (for example, the right hemisphere is more sensitive to testosterone),13 and to pharmacological agents;14 and they depend on preponderantly different neurotransmitters (the left hemisphere is more reliant on dopamine and the right hemisphere on noradrenaline).15 Such structural and functional differences16 at the brain level suggest there may indeed be basic differences in what the two hemispheres do. So what does the neuropsychological literature tell us about that?
