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lion1998

金虫 (正式写手)

[交流] Everyday News-Ostriches Are Stealth Sleepers

Contrary to popular belief, ostriches don't sleep with their heads in the sand. In fact, to all appearances, they never sleep at all: their eyes stay open, although they appear to doze off from time to time. To learn more about the sleep patterns of this unusual bird, researchers captured six ostriches in South Africa and measured their brain wave patterns with data loggers while they slept They expected the brain waves to look like those of other birds and mammals, which cycle between two patterns: deep sleep and rapid eye movement (REM). When the loggers showed that the ostriches were in deep sleep, the birds looked entirely alert. But when they entered another sleep cycle, their heads started to droop. This second brainwave pattern wasn't classic REM, but a unique hybrid of REM and deep sleep patterns, the researchers report this week in PLoS ONE. The only other animal to show this pattern is the platypus, a member of an ancient group of egg-laying mammals known as monotremes. As ostriches are an ancient type of bird, this similarity suggests that the separation between REM and deep sleep may have evolved recently in birds and mammals. One can only speculate on whether ostriches and platypuses have similar dreams, too.

Video:
http://bcove.me/822crygl

[ Last edited by lion1998 on 2011-9-19 at 07:13 ]
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Iamaleafonthewind.
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小木虫(沙发+1,金币+0.5):恭喜抢个沙发,再给个红包
2楼2011-09-19 07:16:27
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小木虫(金币+0.2):抢了个小板凳,给个红包
3楼2011-09-19 07:30:38
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宝贝NO1

木虫 (著名写手)

金牌世尊

maybe you can let your dreem to wake up you
LoseyourdreemMeansloseyourlife!
4楼2011-09-19 07:58:10
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fengxinzi321

木虫 (著名写手)

豆豆


lppv(金币+1): sounds good. thank you. 2011-09-19 14:11:47
Birds and animals can give us new knowledges if you look at them in a new way !And not all customs are right ,please keep alet when you read a new book !
努力,做最好的自己!
5楼2011-09-19 09:10:10
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6楼2011-09-19 11:02:55
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7楼2011-09-19 20:45:19
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wry3300

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everyone has similar dreams
此树是我栽,此路是我开,手中一支笔,管挖不管“填”——果果哥
8楼2011-09-19 21:47:51
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