Effects of Wearing NBC (Nuclear, Biological and Chemical) Protective Clothing in the Heat on Detection of Visual Signals
ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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Sensitivity for detection of visual signals distributed at various locations throughout the visual field was studied in 16 male subjects during degrees of ambient heat exposure 91F61RH 70F35RH 55F35RH, in combination with and without wearing of the Army NBC protective clothing system MOPP-IV. Response time for signal detection increased systematically and significantly with peripheralization of stimulus locations, was most impaired in the superior and inferior visual field areas, and least affected along the horizontal axis area. The data support previous results obtained using this task. Both the heat and the heatMOPP-IV exposure conditions produced highly significant systematic increases in response time to all signals the worst performance occurred under the heatMOPP-IV combination. Implications for visual performance while wearing chemical protective gear are discussed. Keywords MOPP-IV gear, Heat effects, NBC clothing, Visual field, Peripheral vision, Signal detection.
- Anatomy and Physiology
- Stress Physiology
- Protective Equipment