Stress can impair judgement in unexpected ways. As these astronaut candidates undergo low oxygen training, some become convinced they're feeling symptoms that exist only in their minds.
I recently finished tapering off a mood stabilizer that caused cognitive deficits and it was difficult to recognize when it's happening. After some time I'd notice obvious things but a lot of stuff only seems obvious after a reduction in medication. It's hard to notice things that aren't there.
This reminds me of the video where military pilots go through G-force testing. One student does really well so they give him the 30sec 9G challange.
About halfway through he stops using the "hick"-breathing method, they remind him to use it and he says something along the lines of "it's okey, I'm fine"
they're obviously getting in their own heads because they are consciously anticipating it. i feel like in a situation where they arent anticipating it constantly, it'd be easier to tell if they suddenly feel different. am i wrong? i feel like this test is a BIT flawed and should be tested secretly so they wont be constantly anticipating and getting in their own head about it. then again i dont know how this test is fully conducted and im basing what i am seeing on what im saying now, so idk
What I learned is that cognitive fatigue can result in a subjective perception of hypoxia in some individuals. I'm curious if more training could improve accuracy.
These four were the outliers, but how many took the test and passed? Context is missing.
A CAMI chamber test on about 8 pilots, in about 2008, performed a test similar to this. At a pressure altitudes of 19,000 ft. The subjects had to talk with a mock center simulating a set of complex aircraft positioning maneuvers while wearing MBU-12 and MBU-20 masks. The purpose was to see if talking had any effect on SpO2 readings. It did. The drops were quite deep and quite note worthy. The thought that pilots were breathing on a nasal-oral mask in controlled airspace situations it would mitigate hypoxia. The testing showed not so.
People don't generally have any sensitivity to hypoxia. What they sense for the breathing reflex is accumulation of carbon dioxide.
As long as they can breathe their carbon dioxide away, unless they can recognize their confusion/inability at a known task as their mental acuity suffers, they're not going to recognize it. From personal experience in a hypobaric chamber, a lot of people can't.
Soooooooooo, you absolutely positively can't tell when you are low on oxygen, that means a human being is unreliably for this diagnosis and an external mechanism that measures blood oxygen must be employed to prevent accidents. What I miss in this video is actually the conclusion that you can't tell yourself when your capacity is reduced, because like shown in this case, stress induced tension can trigger a false positive.
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"New time record for a spacewalk? I'm ready."
About halfway through he stops using the "hick"-breathing method, they remind him to use it and he says something along the lines of "it's okey, I'm fine"
Blood oxygen level never went below 100%
🤣
These four were the outliers, but how many took the test and passed? Context is missing.
As long as they can breathe their carbon dioxide away, unless they can recognize their confusion/inability at a known task as their mental acuity suffers, they're not going to recognize it. From personal experience in a hypobaric chamber, a lot of people can't.
me immediately: EMERGENCY