NASA has developed an eye movement test to detect acute sleep deprivation in people, reports The Week.

The study, published in The Journal of Physiology, shows that a range of eye-movement tests provide a reliable biomarker of individual acute sleep loss.

The research, conducted at NASA’s Ames Research Center in the US, found that a set of easily-obtainable eye-movement measures could be used to provide a sensitive and reliable tool to detect small neural deficits.

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