Quote: (Originally Posted by
Mike)

How much of the problem with CO2 is driven by the primary effects of CO2 (imperative to breath), vs the secondary effects (Narcosis, increased sensitivity to O2)?
Hi Mike,
First, congrats on playing with your physiology. What you did was not a very good measure for what you seem to want to know but the key is asking the question and actually doing something to test it. The quick test 'Genesis' did was similar to a CO2 test we do here to determine CO2 production of individual subjects. It can also be a pretty good way to "feel" the onset. (I am NOT saying this is safe. If you do try this, please do so with someone else present.)
As for reading material, I just added this paper a few days ago for one of our Hyperbaric Fellows. This is a good starting point for information worth reading.
Carbon Dioxide Tolerance and Toxicity. Lambertsen, CJ
RRR ID: 3861, Citation: IFEM Report No. 2-71
More reports by Dr. Lambertson can be found here:
EBSDC Research Components Chris designed the early systems so his work should always be at the top of your list when asking questions about rebreathers.
Hope this helps!
G