Recently a read this in an article "Research has shown that blind people demonstrate very little to no rapid eye movement (REM) during the REM phase of sleep—the deep-sleep stage in which we have vivid dreams and the most brain activity during the night. As time progresses, the movements stop altogether. But that doesn’t mean that dreams aren’t happening—the eyes just aren’t involved in them."

I think that would be interesting to do a research to know if blind people coud control their dreams. They could not rotate, or coud theY?