i used to be interested in the “quantum theory of consciousness” that i think penrose and some other guy proposed. basically random particle effects happening inside microtubules on neurons were contributing to neuron firing patterns. pretty sure it’s been somewhat debunked.
Yeah, that was the main one I had in mind. There are others that mostly just point at nuclear spins can go several seconds without decohering in molecules in neurons and came up with these being passed between neurons by chemical reactions. But that one never seemed too fleshed out.