But nitrogen at that high pressure, the deeper you go, the more narcotic it gets.
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But about a quarter of its users appear to be looking for ways to find more narcotic painkillers, anti-anxiety medication, and amphetamines.
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Controlled tests have not shown breathing nitrox to reduce the effects of nitrogen narcosis, as oxygen seems to have similarly narcotic properties under pressure to nitrogen; thus one should not expect a reduction in narcotic effects due only to the use of nitrox.Oxygen has the potential to be 1.7 times more narcotic than nitrogen - see relevant narcotic potency of gases Nonetheless, there are people in the diving community who insist that they feel reduced narcotic effects at depths breathing nitrox. This may be due to a dissociation of the subjective and behavioural effects of narcosis. Although oxygen appears chemically more narcotic at the surface, relative narcotic effects at depth have never been studied in detail, but it is known that different gases produce different narcotic effects as depth increases.
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Argon (Ar) is an inert gas that is more narcotic than nitrogen, so is not generally suitable as a diving breathing gas. Argox is used for decompression research. It is sometimes used for dry suit inflation by divers whose primary breathing gas is helium-based, because of argon's good thermal insulation properties. Argon is more expensive than air or oxygen, but considerably less expensive than helium.
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Using argox 20% would slightly degrade this to 74% of that of air. Argon is far more narcotic (about 2.3 times more) than the cheaper and more readily available nitrogen at depth, so it loses out to nitrogen in all roles as a primary breathing gas. If the maximum operating depth for air owing to narcosis is taken to be , then for 20% argox (20% O2, 80% Ar) it would be .
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Cosmic Psychos are an Australian punk rock band which formed in 1982 as Spring Plains. Founding members included Ross Knight on bass guitar and vocals; Robbie Addington on guitar and vocals; and Steve Morrow on vocals. Australian rock music historian, Ian McFarlane, described their music as "arty kind of punk noise, somewhere between The Birthday Party and a more narcotic sounding Ramones". Late in 1984 the group was renamed as Cosmic Psychos.
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According to Australian rock music historian, Ian McFarlane, their music was "arty kind of punk noise, somewhere between The Birthday Party and a more narcotic sounding Ramones". In 1984 the group recorded a track, "American Hymn", for a various artists compilation, Asleep at the Wheel. Late that year Morrow and Turton-Lane were replaced by Ross Knight (ex-Rancid Spam) on bass guitar and lead vocals. They financed a self-released cassette which included "Custom Credit".
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Since there is evidence that oxygen plays a part in the narcotic effects of a gas mixture, the NOAA diving manual recommends treating oxygen and nitrogen as equally narcotic. This is now preferred to the previous method of considering only nitrogen as narcotic, since it is more conservative. In this analysis, it is assumed that the narcotic potentials of nitrogen and oxygen are similar. Although oxygen has greater lipid solubility than nitrogen and therefore should be more narcotic (Meyer-Overton correlation), it is likely that some of the oxygen is metabolised, thus reducing its effect to a level similar to that of nitrogen.
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Narcosis results from breathing gases under elevated pressure, and may be classified by the principal gas involved. The noble gases, except helium and probably neon, as well as nitrogen, oxygen and hydrogen cause a decrement in mental function, but their effect on psychomotor function (processes affecting the coordination of sensory or cognitive processes and motor activity) varies widely. The effect of carbon dioxide is a consistent diminution of mental and psychomotor function. The noble gases argon, krypton, and xenon are more narcotic than nitrogen at a given pressure, and xenon has so much anesthetic activity that it is a usable anesthetic at 80% concentration and normal atmospheric pressure.
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In a highly positive review, Steve Hochman of the Los Angeles Times called So Tonight That I Might See "far more narcotic and hypnotic than anything the whole techno-trance universe has digitally blipped up to date." NME described it as an "even more lustrous, becalmed work" than She Hangs Brightly, later placing it at number 44 on its year-end list of the best albums of 1993. Lorraine Ali of Rolling Stone was more critical, writing that the album's initially intriguing qualities grow "increasingly monotonous", while Robert Christgau of The Village Voice dismissed the album as a "dud". AllMusic critic Ned Raggett retrospectively wrote that So Tonight That I Might See "remains the group's undisputed high point, mixing in plenty of variety among its tracks without losing sight of what made the group so special to begin with".
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This depth is the theoretical maximum which can be safely attained with any two-component argon/oxygen mix: a larger fraction of oxygen than about 50% will result in oxygen toxicity before this depth, and a larger fraction of argon than about 50% will result in argon narcosis before this depth. However, as argox is more narcotic than nitrogen (causing it to be more dangerous if a decompression mix is accidentally breathed), and because argox is moderately more expensive than nitrox, and mostly because there has been little research done into the actual (vs. theoretical) physiological aspects of breathing argon during decompression, argox is not currently recommended by any professional agency for this purpose. Although there is little research relating to divers decompressing using argon mixes, there have been scientific studies of astronauts decompressing using argox.
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