"Seeing" is the process of constructing meaning from the raw activation of the light receptors in your eyes. That's why optical illusions work. After all, it's simply patterns of ink on a page - why should you see things that seem impossible? It's because the image is designed to get your brain to construct a particular meaning out of the image.
I'm well aware of that. What I'm getting at is that the same process that produces changes in how visual sense data gets interpreted also produces changes in how all your other sense data gets interpreted. This includes the sense data that introspection and narrative construction generates.