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In their minds, they’d lost months.Įven crazier, the researchers reported that Senni would sleep for stretches of 30 hours at a time, but wake up believing he had just taken a quick nap. Senni’s sense of time was even more distorted - just a few days before emerging from his cave on April 5, he thought it was February 4. When Laures came out of her cave on March 12, 1965, she thought the date was February 25. Laures spent 88 days in the cave, while Senni spent 126. When they finally emerged, they had to wear dark goggles to shelter their eyes from the bright sunlight, and their senses of time were insanely warped. Laures and Senni weren’t given any insight about how time was passing outside of their dark living holes. The only people Laures and Senni stayed in touch with were researchers at a control point who tracked their sleeping and eating habits, as well as memory and vital signs, according to The Atlantic. SEE ALSO: Gazing into Someone’s Eyes Can Cause Hallucinations They didn’t even have the company of one another they resided in separate caves a few hundred yards apart. Two cave explorers, Josie Laures and Antoine Senni, took on a particularly gloomy mission in the name of science - living alone in a dark, desolate cave for months to test the effects of isolation, loneliness, and darkness. So what happens when our body is deprived of light? Very strange things, indeed. We don’t realize it, but it gets us up in the morning, takes us through our regular day, and its absence sends us into our nightly slumber. You could sleep for days and think it was a nap.