German researchers have imaged more than 30 puppies spiders while they slept with an infrared camera. It was found that they exhibited “periodic bouts of retinal movement” coupled with “twitching of the limbs and curling of the legs”. A feature similar to the REM phase of sleep, so then even spiders can to sleep And to dream as man.
Some birds and mammals have also shown evidence of REM sleep experiments. The study and Daniela Roessler, an evolutionary biologist, focused on domed evacha. A jumping spider hanging upside down on a silk thread to sleep at night. The images show that spiders also have a sleep cycle. sometimes it legs Yes contract she eyes tremble. Here, by experts, these idiosyncrasies are comparable to the REM phase (the active phase of human sleep in relation to dreams).
There is no certainty that it is really an REM phase, including dreams. It is not even certain whether this resting phase is sleep or not. However, it has been noted that spiders respond more slowly to: external stimuli which would allow them to react quickly under other circumstances. Further research will be done to understand whether these observations may be valid for other spider species and to confirm the REM phase.
Source: Lega Nerd
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