Slashdot Mirror
Snortable Drug 'Replaces' Sleep For Monkeys In Trials
sporkme writes "A DARPA-funded research project at UCLA has wrapped up a set of animal trials testing the effects of inhalation of the brain chemical orexin A, a deficiency of which is a characteristic of narcolepsy. Monkeys were deprived of sleep, and then given a shot of the compound. 'The study ... found orexin A not only restored monkeys' cognitive abilities but made their brains look "awake" in PET scans. Siegel said that orexin A is unique in that it only had an impact on sleepy monkeys, not alert ones, and that it is 'specific in reversing the effects of sleepiness' without other impacts on the brain.' Researchers seem cautious to bill the treatment as a replacement for sleep, as it is not clear that adjusting brain chemistry could have the same physical benefits of real sleep in the long run. The drug is aimed at replacing amphetamines used by drowsy long-haul military pilots, but there would no doubt be large demand for such a remedy thanks to its apparent lack of side-effects."
Years ago I was asked to join a group doing government work in exploring drugs related to sleep replacement or to maintain alertness in certain groups of people. This sort of stuff made me uncomfortable then and it still gives me the creeps.
The question for me always is whether or not the drug can *replace* sleep and all of its critical physiological functions. Sleep is a complex phenomenon with very specific architectures that helps maintain learning, performance, sanity and literature suggests more far reaching benefits from regular sleep. Lots of drugs can make the brain look "awake" including amphetamines and modafinil, itself widely used by people to maintain activities in the face of sleep needs. However, there are long term biological implications for not allowing one to invoke sleep including poor long term performance on learning and memory and there is some literature that suggests cardiovascular implications as well as other problems. Now, while the adverse effects of amphetamines are well known, they have been used for at least 60 years. On the other hand, drugs like modafinil are very recent and you may be shocked to find out just how many physicians, pilots, military personnel, truck drivers and housewives are currently taking modafinil to maintain alertness in the face of lack of sleep.
Visit Jonesblog and say hello.
Without having performed any research at all, I'm going to speculate that actual sleep is very important. In the wild it is dangerous to be unconscious for hours at a time. If it wasn't absolutely necessary, then nature would have found a way to avoid it. Or, more correctly stated, not needing sleep would seem to be a pretty amazing advantage.
But, almost anything with measurable cognitive abilities needs sleep. So there must be some very important work going on there. Probably laying down neural hardlines where temporary chemicals were making pathways before? I'm just guessing, but it's got to be something that requires a partial shutdown.
I think the technology is cool and would be useful for some things, though. I'm always in favor of exploring the outer limits of our abilities. It will be very interesting to see what happens if a person uses this chemical sleep exclusively for, say weeks at a time. Maybe we'll learn what sleep is really for by seeing what stops working correctly. My guess is that they'll not be able to recall anything beyond the past couple days. Things that happened too far back in their wakefulness will not get layed down as long term memories and will be permanently lost.
That is, it'll be kind of like Memento except with, say, a 72 hour working memory instead of 10 minutes.