"This microbe, called a choanoflagellate, is one of the single-celled organisms most closely related to the animal kingdom. New work shows that its ancestors made proteins that were later repurposed by the nervous systems of the first animals". (Quanta magazine/Brain-Signal Proteins Evolved Before Animals Did)
The origin of brain signal molecules or neurotransmitters is long before the first cells. That means brains didn't "invent" those molecules that are playing a vital role in human and animal brains. The question is how neurons "learned" to use those molecules?
Things like bacteria could use similar neurotransmitters in communication. But nobody ever found an intelligent bacteria mass. The fact is that there is the possibility that bacteria can form similar structures to brains.
It's theoretically possible, that neurons can hybridize with bacteria and from intelligent structures. In that case, nothing limits the size of those neural structures. And the communication between those things and computers could happen through the brain-computer interface systems. That kind of neural structure can also take other species under their control. But the thing is that we don't know any of that kind of organism.
The synapse bladder is one of the most important things in neural structures. That thing keeps neurons separated from each other.
When we are thinking about evolution there must be something that gives species benefits from this kind of chemicals. And then the neurons must connect the production order of those chemicals in their genomes. The human brain would be far faster if those neurons would connect straight without the synapses bladder.
And the purpose of the synapse bladder is to protect the neural structure against the virus infection. Because all neurons are separated the virus cannot infect all neurons straight. The thing is that synapses bladder and neurotransmitters are making brains a little bit slower than they could be.
The same structure that protects brains against viruses makes them vulnerable to botulinum and other neurotoxins. Neurotoxins like botulinum are affecting the enzymes that are destroying neurotransmitters.
So that thing causes the neuron cannot destroy the neurotransmitters. And that thing causes the symptoms like spasms. When the neuron will start to send the same signals again and again through the neural structure.
If the brains would use electricity in communication, they would be more effective or faster. And that structure protects them against neurotoxins that are basing organophosphates. The other neurotoxins are just mixing the signals that are traveling in the neural structure.
In the case, that something wants to connect neurons the system should use nanotechnical carbon structures that can connect synapses precisely without cross or duplicated connections. And that denies mixing the signal in the synapse bladder. The thing that makes things like mercury neural poison is that the droplets of that metal will get between synapsis. And that will make it impossible to separate neural signals that are traveling between the neurons.
If those channels are not connected precisely, that makes an error in data transmission. The thing that makes human brains a little bit slow is when the signal will travel between neurons. They must pack it in the neurotransmitter before it can travel through the synapses bladder.
Maybe that kind of thought that the power of the human brain can boost by using nanotechnology is possible in the future. In that model, the carbon wires will connect neurons precisely from the end of the synapsis. And that thing makes the neurotransmitters unnecessary.
https://www.quantamagazine.org/brain-signal-proteins-evolved-before-animals-did-20220603/
Image:) https://www.quantamagazine.org/brain-signal-proteins-evolved-before-animals-did-20220603/
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