During observation, the spiders’ overnight movements looked a lot like REM in other species — like dogs or cats twitching in their sleep. And they happened in regular cycles, similar to sleep patterns in humans.
The research showed the spiders’ overnight movements looked a lot like REM in other species, she said — like dogs or cats twitching in their sleep. And they happened in regular cycles, similar to sleep patterns in humans.
But these jumping spiders are predators that move their retinas around to change their gaze while they hunt, Shamble said. Plus, the young spiders have a see-through outer layer that gives a clear window into their bodies.The researchers still have to figure out if the spiders are technically sleeping while they’re in these resting states, Roessler said. That includes testing whether they respond more slowly — or not at all — to triggers that would normally set them off.
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