I’m not fond of the Brain-Computer Analogy that suggests neurons are like digital circuits and the brain is a complicated computer. Neurons are orders of magnitude more complex than any digital device having a simple binary output of 0s or 1s. Binary elements—bits— are too simplistic to model a living neuron.
However, what about qubits, the fundamental elements of a quantum computer?
Now, a qubit is different “in kind” from a bit. Although the functional output of a qubit will be a one or zero, the path to get to this output will be an amplitude generated by a complex summation of the probability of two states, 0 and 1. Qubits effectively have an infinite number of possible values between and including 0 and 1 (including values using the complex number i, the square root of negative one).
Effectively, qubits could be a model for a neuron state which may be more complex than a neuron state.
So, I am not fond of the Brain-Computer Analogy, but a Brain-Quantum Computer Analogy is beginning to work for me.