What happens when you give an octopus MDMA?

By Russell Hausfeld|July 23, 2018

A team of researchers bathed octopuses in MDMA. Here’s what they learned.

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Ateam of researchers bathed octopuses in MDMA and found that it makes the typically asocial animals more social.

Dr. Gul Dolen of Johns Hopkins University and Eric Edsinger of the University of Chicago conducted this experiment under the hypothesis that some neurotransmitter systems are shared across vertebrate and invertebrate species — “in many cases enabling overlapping functions.”

In this case, the authors were studying a serotonin transporter binding site of MDMA that they believed octopuses share evolutionarily with humans — even though our lineages are separated by over 500 million years. Basically, they thought that MDMA would have a similar effect on octopus behavior to the effect it has on human behavior.

First, the researchers presented sober octopuses with 3 chambers: one empty chamber, one social chamber, and one chamber with an object in it. Based on records of their behavior for 30 minutes, sober octopuses would spend more time in the object chamber and the social chamber (but only when the social chamber had a female in it.)

Then, the octopuses were bathed in MDMA for ten minutes and given the same test.

What they found was that, yes, MDMA significantly increases pro-social behaviors that are usually suppressed in octopuses. On MDMA, octopuses are more apt to want to hang out with other octopuses than when they are sober.

The study claims that this indicates the “role of serotonergic neurotransmission in regulating social behaviors is evolutionarily conserved” in octopuses — at least of the O. bimaculoides variety.

Based on MDMA’s ability to induce pro-social behaviors in octopuses, the authors write that “it is tempting to speculate that in octopuses sociality is the default state, which is suppressed outside ethologically relevant periods, such as mating.”

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Russell Hausfeld

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Russell Hausfeld is an investigative journalist and illustrator living in Cincinnati, Ohio. He has a Bachelor’s degree in Journalism and Religious Studies from the University of Cincinnati. His work with Psymposia has been cited in Vice, The Nation, Frontiers in Psychology, New York Magazine’s “Cover Story: Power Trip” podcast, the Daily Beast, the Outlaw Report, Harm Reduction Journal, and more.