[mcswell]

One more anecdotal point: He arranged for a female spelunker to perform the same experiment later. She stayed underground for 100-some days. 14 months after her stay, she OD'd on barbiturates. There's a wikipedia article about her.

[observationist]

https://en.wikipedia.org/wiki/V%C3%A9ronique_Le_Guen

Tragic - I'd hesitate to tie the cave experiments to the death, but it sure looks bad. It doesn't seem like humans are designed to cope well with long isolation and detachment from reality, but deprivation tanks and other practices show significantly positive results.

[gizajob]

That’s really sad. Does seem like they might be correlated. Reading all this I’m not sure why they have to be underground in a cave?? Ok they’re cavers doing these temporal experiments but those could be done as easily above ground somewhere with no solar cues.