A very short but thought provoking TED talk on how much of our reality is "hallucinated," or predicted based on prior perceptions of pattern:
And for the nerdiest of nerds, you can read the individual research papers on the scientific discoveries in the field of consciousness studies here: [sussex.ac.uk]
. . . title leaves-out that is is described as a controlled 'hallucination'
Well I did say that our perception of reality is mostly predicted by recognizing patterns in prior perceptions. That pretty much states how perception is controlled. Plus, it's youtube's title, not mine.