Masking as an Indicator of Neural Fatigue: a Preliminary Study
Medical research progress rept. no. 3
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
Pagination or Media Count:
The objective of the research is to determine whether or not the basic neural phenomenon of masking the ability of a visual stimulus to inhibit the detection of another, target stimulus can be used as an indicator of the state of fatigue or stress of an individuals nervous system. Fatiguing the visual system by prolonged viewing of a moving pattern results in the reduction of the apparent brightness of a moving line. The ability of the line to mask a target stimulus is also reduced, by the amount which occurs when the physical intensity of the line is lowered by an amount equal to the apparent decrease in brightness as a result of fatigue. These results suggest the possibility that the masking phenomenon may serve as a measure of the state of fatigue of the nervous system or of the effect of a variety of other stresses and may be an indicator of incipient disability of the individual.
- Stress Physiology