Psychological studies of human performance as affected by traces of enflurane and nitrous oxide.
Thirty human subjects were exposed for four hours to 500 ppm N-2O and 15 ppm enflurane in air and then, within five minutes, given a 35-minute battery of psychological tests. Performance of a divided-attention audiovisual task and a digit-span memory test were significantly decreased compared with control data following exposure to air. A tachistoscopic task, four tests from the Wechsler memory  scale, and five others from the Wechsler Adult Intelligence Scale were unaffected. Thirty subjects exposed to 500 ppm N-2-O in air only scored significantly lower on the digit-span test only.
D000769:Anesthesia, Inhalation; D005019:Ethyl Ethers / Q000494:pharmacology*; D006801:Humans; D008568:Memory / Q000187:drug effects; D009609:Nitrous Oxide / Q000494:pharmacology*; D011581:Psychological Tests; D013647:Task Performance and Analysis
D005019:Ethyl Ethers; D009609:Nitrous Oxide