sensitivities of neurons to acetylcholine ( ach ) , noradrenaline ( na ) and dopamine ( da ) were investigated at different depths of the dorsolateral prefrontal cortex ( pfc ) in awake or halothane-anesthetized macaque monkeys , using microiontophoretic techniques with multi-barreled electrodes .
C0028351
noradrenaline
C0018549
halothane