THE EFFECTS OF HYPERBARIC AIR IN COMBINATION WITH ETHYL ALCOHOL AND DEXTROAMPHETAMINE ON SERIAL CHOICE-REACTION TIME

Authors
  1. Hamilton, K.
  2. Fowler, B.
  3. Porlier, G.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);York Univ, Downsview ONT (CAN) Dept of Physical Education;York Univ, Toronto ONT (CAN) Dept of Psychology
Abstract
The effects of ethyl alcohol (1.5 ml/kg body weight) and dextroamphetamine (15 mg) on nitrogen narcosis were investigated in two experiments using a 2-, 3- and 4- choice serial reaction time (RT) task with accuracy held constant. Narcosis was induced with air at 6.4 atmospheres absolute (ATA) and a heliox mixture was used as a control. Heliox at 6.4 ATA did not affect RT. Alcohol alone and air at 6.4 ATA increased the intercept of the Hick-Hyman function whereas amphetamine alone decreased it. The increased intercept with air at 6.4 ATA was exacerbated additively by alcohol and ameliorated antagonistically by amphetamine. It is concluded that these data are consistent with the slowed processing model which proposes that the effects of narcosis on performance are due to a decrease in arousal in conjunction with secondary changes in task strategy.
Report Number
DCIEM-88-P-52 — Research Paper; Reprint
Date of publication
01 Jan 1989
Number of Pages
14
Reprinted from
Ergonomics, vol 32, no 4, 1989, p 409-422
DSTKIM No
89-03137
CANDIS No
61038
Format(s):
Hardcopy;Originator's fiche received by DSIS

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