Accession Number : ADA116251

Title :   A Trimix Saturation Dive to 660 Metres: Studies of Cognitive Performance, Mood and Sleep Quality,

Corporate Author : ROYAL NAVAL PERSONNEL RESEARCH COMMITTEE LONDON (ENGLAND)

Personal Author(s) : Logie,Robert H ; Baddeley,Alan D

PDF Url : ADA116251

Report Date : Mar 1982

Pagination or Media Count : 24

Abstract : This paper reports psychological observations on men during a simulated (pressure chamber) dive to 660 msw using a gas mixture know as Trimix (He-O2-N2). Recent studies by Bennett (personal communication) have suggested that this mixture allows for faster compression with less impairment in performance than the mixture traditionally used (He-O2). Data were obtained from two divers on tests of cognitive performance, namely arithmetic ability, grammatical reasoning, perceptual speed, visuo-spatial manipulation and semantic processing. At maximum depth there was a severe blanket impairment of ability to perform any of the tests. However, at shallower depths, the impairments were not as marked, with performance at 300 msw close to that measured at surface pressure.

Descriptors :   *Stress(Psychology), *Saturation diving, *Perception(Psychology), Sleep, Reasoning, Helium, Oxygen, Nitrogen, Arithmetic, Grammars, Quality, Performance(Human), Performance tests

Subject Categories : Psychology
      Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE