To be clear, I'm not an expert, but the way I imagine it is as genetically encoded biases to process information differently based on its colour, position, whic

To be clear, I'm not an expert, but the way I imagine it is as genetically encoded biases to process information differently based on its colour, position, which neuron(s) or receptors it's coming in from, etc. that don't necessarily encode the entire neural circuitry for a behavior, but make it automatically learnable without the need for full-blown experiences, just as a consequence of the neurons developing and being exposed to normal environmental information at all.