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Richie, I think it was the dives, as I have not had it lately, and we started diving much higher helium. I was just plain scared, probably. Certainly, it would make sense that we would feel bettere with the narcosis in that case. That side may be easier to explain that the helium jitters. Otherwise, Casey told me I was acting jittery on a dive that was routine and easy, so maybe it is there for real. Richard Pyle wrote: > > What is your experience with the "helium willies" (for lack of a better > term) thing? A couple people I've talked to (including Rod Nairne) say > they feel the same thing with no N2 at depths in excess of about > 200-250. I remember you saying something about being too wigged if there > wasn't enough N2 in the bottom mix. I have no clue what this is - the > experts say it's too shallow for HPNS, and besides, the symptoms aren't > exactly right (although I do experience more HPNS-like symptoms starting > at aroung 380-400). One thought is that it is really all just > psychological (i.e., being clear-headed enough to ask yourself "What the > F**k am I doing here?!?!"), but I think it's more than that, because the > symptoms severeity is consistent regardless of how spooky the conditions > are. > > Rich > > On Wed, 3 Sep 1997, G. Irvine wrote: > > > No, I agree - you have to get away from the helium before it builds up. > > > > Richard Pyle wrote: > > > > > > > To tell you the truth, the more I see it, the shallower I make my aed > > > > for nitrogen. The problem then becomes that you do not have as much gas > > > > due to the lower degree of compressibility. > > > > > > This much I agree with - I started limiting my PN2 to about 2.5 atm as > > > soon as I started using the rebreather. The compressibility issue is > > > insignificant with a rebreather - even a semi-closed one. Put N2 in your > > > bailout cylinders. The only reason I use nitrogen at all anymore is to > > > alleviate the "helium willies", which I know you already know about. > > > > > > > Personally, I do not like the feel of a 130 air dive later on, so there > > > > is some kind of damage, so maybe just having ANY helium works, since a > > > > 130 trimix dive does not produce the same effect, and a 130 aed trimix > > > > dive does not produce the same ell as a 130 air dive. > > > > > > Everytime I go deeper than 100 feet on air I feel like shit that night > > > and the next morning. I realized that I always felt that way before, but > > > just figured it was related to diving in general. I don't feel that way > > > at all with the helium - not even after the days where I do two deep > > > ones, and even on dives when the PN2 is greater than it is for air at > > > 100-130. I don't think it's the presence of helium as much as it is the > > > elevated O2 on deco. > > > > > > > I am just going with what my experience tells me, but now we are in the > > > > mood to take it further to see hat the story is, besides, I like rabbit. > > > > > > When you do these experiments, let me know how the rabbit tells you > > > when its shoulder hurts. > > > > > > Don't get me wrong, george - I keep the N2 to a minimum also. It's just that > > > I am smart enough to know that "quickie" explanations like the RBC rigidity > > > thing are usually only a small part of the full picture, if any part at all. > > > I am also very dubious about doing deco on helium as compared to doing the > > > bottom on helium and the deco on N2. > > > > > > Rich > > > > > > Richard Pyle > > > Ichthyology, Bishop Museum deepreef@bi*.bi*.ha*.or* > > > 1525 Bernice St. PH: (808) 848-4115 > > > Honolulu, HI 96817-0916 FAX: (808) 841-8968 > > > "The views are those of the sender and not of Bishop Museum" > > > > Richard Pyle > Ichthyology, Bishop Museum deepreef@bi*.bi*.ha*.or* > 1525 Bernice St. PH: (808) 848-4115 > Honolulu, HI 96817-0916 FAX: (808) 841-8968 > "The views are those of the sender and not of Bishop Museum" -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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