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Not sure about "..Delta activity is characterized by frequencies under 4 Hz and is absent in awake healthy adults, but is physiological and normal in awake children under the age of 13."
As far as I know there is some delta activity in waking adults therefore it is not absent. Do you have a reference for the statement??? Nk.sheridanTalk17:01, 24 March 2008 (UTC)[reply]
I'd have to dig into some things to find a good reference without just throwing Niedermeyer's (EEG Bible) arbitrarily at you; but, it would work. For now, as a Registered EEG tech, I will note that awake adults do not typically exhibit EEG activity slower than alpha frequencies of 8-12 (some exceptions as you get older in the theta range) unless they are getting drowsy, or have some sort of impairment from disease, trauma, or chemical influence. Young children can have slower frequencies normally, particularly when they are drowsy. The amplitude of children's EEG is generally much higher as well. Cronides2 (talk) 17:51, 12 October 2009 (UTC)[reply]
This was a great resouce for me, a WPW heart patient. If the topic was merged with brain waves, I would not have found the article useful.
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A reference between the articles would be usefull, but since it are two completely different articles I would it seems not a really good idea. If one searches for information about delta waves as e.g. a student, you couldn't care less about the TV series.
"normal in awake infants under the age of 13 years" - is this a typo? maybe years should be months. or maybe the author used a different definition of infants than I'm familiar with. Zoffoperskof06:52, 26 February 2007 (UTC)[reply]
yeah ok, it could be "children" I suppose, though if you look at the 2nd paragraph of Infant the definition works... But it's years and not months. XApple11:48, 26 February 2007 (UTC)[reply]
A newborn baby spends more than 80% of total sleep time in REM.
Infants have been shown to spend a great deal of time in slow-wave sleep, and thus have more delta wave activity. In fact, delta-waves are the predominant wave forms of infants. Analysis of the waking EEG of a newborn infant indicates that delta wave activity is predominant in that age, and still appears in a waking EEG of five-year-olds.
According to the slow-wave sleep article:
"As of 2008, the American Academy of Sleep Medicine (AASM) has discontinued the use of stage 4,[2][3][4] such that the previous stages 3 and 4 now are combined as stage 3. "
This article continues to use stage 4 sleep and should be updated or justified.72.172.1.109 (talk) 22:18, 19 April 2013 (UTC)[reply]
While I don't trust everything in Doctor Who to be true the Doctor played by Christopher Eccleston attempted to use a Delta Wave to destroy all life on Earth. Is a Delta Wave dangerous? Or would it have to be amplified to be dangerous? I read the article but it doesn't state if it is missing this information, or just if it is just science fiction. Thanks ツ Jenova20(email)16:23, 1 May 2013 (UTC)[reply]
Pure science fiction! We all have them in our brains quite frequently, and we're still here. I suppose that someone could create a huge amount of ionizing radiation at delta frequency, and use it as a weapon, but it would have nothing to do with it being delta, per se, and that's an esoteric quibble. --Tryptofish (talk) 23:02, 1 May 2013 (UTC)[reply]
We all have them in our brains quite frequently, and we're still here. I suppose that someone could create a huge amount of ionizing radiation at delta frequency, and use it as a weapon, but it would have nothing to do with it being delta, per se, and that's an esoteric quibble. --Tryptofish (talk) 23:02, 1 May 2013 (UTC)[reply]
