Citation

Arrabito GR, Cheung B, Crabtree RB, McFadden SM. Aviat. Space Environ. Med. 2000; 71(5): 536-542.

Affiliation

Defence and Civil Institute of Environmental Medicine, Toronto, Ontario, Canada. robbie@dciem.dnd.ca

Copyright

(Copyright © 2000, Aerospace Medical Association)

DOI

unavailable

PMID

10801009

Abstract

BACKGROUND: The use of a three-dimensional (3-D) auditory display to significantly lower subject detection level while maintaining comprehension under sustained positive G-stress was explored in this study. METHODS: Auditory threshold levels were measured for detecting a band limited pulsed signal in the presence of a broadband diotic masker at both + 1 Gz (rest position) and under sustained +3 Gz. The pulsed signal was presented diotically and was spatialized at one of four static azimuth positions on the horizontal plane. RESULTS: Results showed that auditory thresholds were not significantly affected by sustained +3 Gz stress. Compared with a diotic presentation, subjects reached an average of 6.8 dB lower auditory threshold at +1 Gz and under sustained +3 Gz when the pulsed signal was spatialized at a static position of 90 degrees azimuth on the horizontal plane. CONCLUSION: The implication of these results and suggestions for further research are discussed.

Language: en