Fourth, delusions of grandeur.
And finally, catatonia.
Throughout the course of this outstanding research program, it has been evident that pilot fatigue is a significant safety issue in aviation. Rather than simply being a mental state that can be willed away or overcome through motivation or discipline, fatigue is rooted in physiological mechanisms related to sleep, sleep loss, and circadian rhythms. These mechanisms are at work in flight crews no less than others who need to remain vigilant despite long duty days, transmeridien travel, and working at night when the body is programmed for sleep.
The brain cap sends weak pulses of near-infrared light into the brain, then analyzes the reflected wavelengths. The results reveals how much oxygen is in the brain's blood, which is a gauge of it's activity (is that why I like to do hand stands?). The psychiatrist who is developing the scanner, Gary Strangman, said that he and others are already using the device on Earth-bound patients.