the availability of increasingly powerful magnetic resonance imaging techniques to provide noninvasive information about tissue chemistry ( e.g. , neurotransmitters and citric acid cycle metabolites ) and positron emission tomography to noninvasively evaluate cns drug-receptor interactions should lead to a more in-depth understanding of the in vivo effects of anesthetics and analgesics on the cns .
C0007680
cns drug
C0002771
analgesics