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Effect of visual illusion, circularvection, in flight simulator on posture control
Journal of UOEH
|March 1, 1985
Summary
Healthy volunteers experienced self-motion illusions (circularvection) in a motionless fighter jet simulator. Post-flight tests revealed significant postural instability and impaired fine motor control, indicating simulator-induced sensory disturbances.
Area of Science:
- Aerospace Medicine
- Human Factors Engineering
- Neuroscience
Background:
- Flight simulators are crucial for pilot training, but can induce sensory illusions.
- Understanding simulator-induced effects on balance and motor control is vital for safety.
Purpose of the Study:
- To investigate the occurrence of circularvection (vection) and its impact on postural control.
- To assess post-flight sensorimotor disturbances in a fighter flight simulator environment.
Main Methods:
- Four healthy male volunteers experienced a fighter flight simulator.
- Postural control was evaluated using standing balance tests and a Square Drawing Test.
- Optokinetic nystagmus was recorded using electrooculography (ENG).
Main Results:
- All participants reported circularvection, a sensation of self-motion, despite the simulator being motionless.
- Significant body staggering was observed during post-flight standing tests.
- The Square Drawing Test indicated impaired fine hand-arm motor control, and ENG showed increased nystagmus during simulated banking.
Conclusions:
- Fighter flight simulators can induce strong vection and disrupt postural control.
- Post-flight sensorimotor deficits, including balance and motor control impairments, were evident.
- These findings highlight the need for managing simulator-induced sensory conflicts in aviation training.