PERFORMANCE EFFECTS OF INCREASED AMBIENT PRESSURE. II. HELIUM-OXYGEN SATURATION AND EXCURSION DIVE TO A SIMULATED DEPTH OF 1100 FEET
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
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Two experienced, commercial divers were administered a simple addition test, a letter cancellation test, a geometric forms test and a choice reaction time test RATER at selected intervals before, during and after a simulated, helium-oxygen dive in a pressure chamber complex to a saturated depth of 800 feet with excursion dives to 1000, 1050 and 1100 feet. The compression rate was 3.5 per minute. Few, if any decrements in performance on any of the measures were noted. In fact, in some instances, slight improvements were found which cannot be attributed to learning or practice effort. Most changes were postulated as being due to motivational factors. Future plans for continued validation of the performance measures used are present.
- Stress Physiology