2026-05-06 14:30 UTC
Octopus neurology just gets crazier and crazier.
Note that the diagram is a little misleading. An octopus does not have a north arm and a south arm as shown here. It has four arms on the left, and four on the right.
So here we see that the frontmost of the left arms is directly connected to the rearmost of the left arms, but this connection bypasses the other two left arms. It is, however, connected directly with the third arm back on the right.
Source: https://doi.org/10.1016/j.cub.2022.11.007
#octopus #wtf
Replies (2)
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@mjd@mathstodon.xyz 2026-05-06 14:50
Aha, the actual paper has a less misleading diagram. Notice L1 connected to L4 and to R3, as I said. Notice also that the paired arms L2 and R2, and L3 and R3, are connected directly. https://doi.org/10.1016/j.cub.2022.11.007
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@rowat_c@mastodon.social 2026-05-07 03:52
@mjd@mathstodon.xyz no privileged role for the third right arm/hectocotylus (à la https://phys.org/news/2026-04-lengths-male-octopuses-arm.html)?