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Date: 25 Apr 97 18:21:45 -0700
From: "JHEIMANN.US.ORACLE.COM" <JHEIMANN@us*.or*.co*>
To: dmooney@cy*.ne*
Subject: Narcosis "slam"
Cc: techdiver@aquanaut.com
I once tried the experiment and switched from EAN32 to air at 130 just to se=
e 
if there was a change in perceived narcosis level; there was none.  On the 
other hand, I don't usually notice narcosis at this depth.  Note that O2 is 
=
usually thought to be narcotic, and EAN32 and air should be roughly equivale=
nt 
in narcotic properties.  When switching from trimix to air at 190', there is=
 a 
pronounced spike of narcosis, although if you are decompressing quietly and 
=
not task loaded or exercising, the sensation of narcosis (although not the 
actual impairment) goes away quickly. 
 
John
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