How does the brain of an octopus remain functional and even intelligent after massive deformations to the brain?
It can squeeze through any hole its beak can fit through. That seems like that would wreak havoc on the synaptic cleft and possibly alter which neurotransmitters are landing where
Posted Nov 12, 2019, 6:59 PM UTC
Imagine a much more stable connection than that, and remember that synapses are almost completely encased in astrocytic processes, so leakage is not really an issue.
But your question is not dumb IMHO, just assumes a rigidity that is not present.
If you remove the brain of a human, it will flatten out like a jelly fish. Head injuries would reset almost everything if synapses were fragile as you describe, which they do not, except in the most extreme scenarios.
Synaptic connections are so strong that the pre- and post-synaptic sides remain connected even when a centrifuge is used to tear them away from neurons!
Be well.
Thank you so much for the comment. I'm getting a lot out of it.
So if leakage isn't an issue, are their neurons just super resilient or elastic? We certainly can't shove our brain through a 1-inch hole without severely damaging it, but a 600 lb octopus can do just that. Do we know what the difference is?