What does each of our 100 billion neurons know?
- The complete human genome. Every neuron contains the full set of 20,000+ genes
- The reports of 1000-10000 neighboring neurons, in the form of amplitude and frequency of their firing/spiking rate (200 times per second). (Each neighboring neuron connects via a synapse, which itself colors the intensity and weighting of incoming signals.)
- It's own internal state
What (in theory) might each of our neurons know?
- A history of its own firing rate over time, stored in a long term memory bank (perhaps saved to "tape" in its internal RNA)
- An evolutionary history of environmental experiences, as recorded in its DNA. i.e. a neuron may know that its current firing rate matches an "innate memory" in its DNA by comparing its current firing history against one stored on its DNA tape. "Fear of snakes" may thus be implemented in DNA, as a neuron compares its firing rate (when perceiving a snake) to a recorded sequence in its DNA and finds a match.