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Scientists locate where potentially hazardous particles on the sun originate
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Scientists locate where potentially hazardous particles on the sun originate
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Scientists create smart tattoo that could pave the way to phone on your skin
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A Glimpse Inside the Mindof Dreaming Animals
动物睡梦中的大脑初探
Avery Hurt 埃夫丽·赫特
f you ve ever watched dogs or cats sleep, you ve probably wondered if they re dreaming. Was that ear twitch or snuffling sound just a reflex? Or is Fluffy dreaming of the hunt? Maybe the sound of the can opener? Since we can t ask, we may never know for sure. But there are good reasons to think non-human animals dream,at least according to a certain definition of dreaming.
Human dreaming occurs mostly, but not exclusively, in the state known as REM(rapid eye movement) sleep. During this phase, the electrical activity in the brain is more like waking than sleeping. Scientists have discovered that most non-human animals mammals, birds, reptiles, and most recently, fish experience REM sleep, too. The electrical activity in these creatures brains during REM sleep is quite similar to that of humans while they dream.