What we see also includes the possibility of how we respond.
Just the cross the perception and response streams a little: What we perceive also includes the possibility of response. These are called affordances, a term coined by a psychologist called James Gibson, and explained in his book The Ecological Approach to Visual Perception. It’s a tremendous book, and really humanises how we see the world instead of expressing it in terms of lines and colour.
You know that left/right thing I talked about earlier. You’re “primed” on position of the stimulus.
That’s a really important experimental paradigm, because you can look into all kinds of ways of how people are primed.