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Published online 16 October 2007 | Nature | doi:10.1038/news.2007.167
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Fish insomnia sheds light on sleep
Studies across species could reveal how sleep evolved.
Zebrafish don't nap more during daylight hours when sleep deprived, a new study shows. The work suggests that fish are better able to use light cues to stay awake during the day than mammals, hinting that evolution has produced different systems for regulating sleep in different groups of animals.
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how do we know that the fish is not affected by this lack of sleep. and is their any marker other than physical appearance for understanding whether a given organism like zebrafish is sleeping or not.
That´s very interesting.
I am a insomniac, I hope the scientists will soon find out the way to cure patient like me.
When the puffer is sleep, it is close his eye, so it is probable that observing to searching sleep time. But zebrafish is so hard to observe. Thanks for a job well done!
It would be useful to add some behavioural experiments to see, if there are any physical or mental consequences for the fish due to the lack of sleep.
why do zebrafish evolute a different sleep system? Is the insomnia not harmful to zebrafish?