Eh? Where did you get that from?
Neurons are not simple binary switches. Action potentials aren’t just yes/no things; they vary by rate. Slow, fast, very fast, slow then fast, etc,
But that’s just the electrical signal within the neuron; once you get to the synapse, it gets a lot more complicated. Releasing a wide variety of neurotransmitters (which in turn have a wide range of effects, mediated by NT type, location, timing, persistence, interaction with other NTs, etc), creating and removing various receptor sites, growing or pruning further synaptic connections, and so on.
Then there’s the NT complexity of agonists vs antagonists, partial agonists, reverse agonists, NTs that act as agonists at low density but antagonists at high density, etc. etc. etc.
And that’s just a smattering of the stuff that we already know about. Our understanding of the complexity and subtlety of neuronal structures is increasing daily.
