Can any sort of nervous system (vertebrate or cephalopod) run without direct signalling from some sort of brain? Like surely if there are animals without brains but with nerves then nerves can function on their own but our nervous system wouldn’t work without the brain right? And if so is it then possible to have a nervous system run on a brain that has less neurons than the system it self? Surely that’d be impossible?
Me too! To me it’s hard to picture at least just vertebrates with more neurons outside the brain then in, I mean how could it run all these systems u mentioned without having more neurons than the actual system needs, or is the reason it is called a neuron because it can function without needing direct signals from the brain?
placidbeans OP t1_jd5pz4g wrote
Reply to comment by Greyswandir in Animals with more neurons outside the brain than inside? by placidbeans
Can any sort of nervous system (vertebrate or cephalopod) run without direct signalling from some sort of brain? Like surely if there are animals without brains but with nerves then nerves can function on their own but our nervous system wouldn’t work without the brain right? And if so is it then possible to have a nervous system run on a brain that has less neurons than the system it self? Surely that’d be impossible?