Mind Matters Natural and Artificial Intelligence News and Analysis

TagSpiders and REM sleep

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Spanish jumping spider Saitis barbipes with fruit fly

Yes, Spiders Dream — But That Doesn’t Make Them Leggy People

We don’t know where on the tree of life “mind,” in the most basic sense, begins. It might include bacteria but not viruses

A recent research article from Germany, which has made quite a splash in the popular press, raises some very interesting questions about animal minds. Animal behaviorist Daniela C. Rößler and co-authors studied 34 young spiders while they slept and found that their eye movements seemed analogous to the eye movements of human beings and other higher animals that occur during REM sleep and are associated with dreaming. They pointed out that this seems to suggest that arachnids may have mental states and dreams that are more akin to those of human beings then previously thought. The article, published in the Proceedings of the National Academy of Sciences, is open access. The research is fascinating in its own right but I…