Accession Number:

ADA193943

Title:

Effect of Hypoxia on Speech Recognition in Noise

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT

Personal Author(s):

• Marshall, Lynne

Report Date:

1987-03-16

Pagination or Media Count:

20.0

Abstract:

Speech-to-babble ratios for 50 word recognition were measured in four men, age 30 to 35, while breathing 12 and 21 oxygen. There were no differences between the two conditions. Learning effects, however, were seen for the task. As the 12-oxygen level is considerably lower than would be used for routine reduction of fire hazards onboard submarines, reduced oxygen levels at the intermediate levels being considered should not affect speech recognition. Keywords Background noise.

Descriptors:

• *HYPOXIA
• *SPEECH RECOGNITION
• BACKGROUND NOISE
• FIRE HAZARDS
• LEARNING
• ONBOARD
• OXYGEN
• PHYSIOLOGICAL EFFECTS
• REDUCTION
• RESPONSE(BIOLOGY)
• STRESS(PHYSIOLOGY)
• SUBMARINES

Subject Categories:

• Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE