The gas was supposed to have a stimulant effect, but it was later discovered that it had some kind of psychoactive properties.
At first, the prisoners were able to stay awake and maintain their sanity, but after several days, they began to exhibit signs of severe sleep deprivation.
They became paranoid, delusional, and violent. They started to hallucinate and reported seeing things that were not there.
They also became increasingly hostile towards each other, and the experimenters.
One of the prisoners reportedly screamed for hours on end until his vocal cords were damaged. Another one bit off his own fingers in a fit of madness.
The experimenters tried to intervene by speaking to the prisoners through an intercom, but their attempts were met with hostility.
On the 15th day of the experiment, the researchers decided to turn off the gas and observe the prisoners.
However, the prisoners refused to leave the chamber and demanded that the gas be turned back on. They believed that if they fell asleep, they would never wake up again.
As the days passed, the prisoners continued to deteriorate.
They stopped talking to each other and started whispering to the experimenters through the intercom. They reported seeing grotesque and disturbing images and begged to be released.
On the 30th day of the experiment, the researchers decided to open the chamber and observe the prisoners in person.
What they found was a scene of horror.
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The prisoners had gone completely insane and had mutilated themselves in unspeakable ways. Some had torn off their own skin and organs, while others had eaten their own flesh.
One prisoner had even ripped out his own eyes.
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