I think she's asking if 'sleep learning' is part of the occult. Although I must say I don't know what sleep learning is..
I often fall asleep listening to radio,tapes or audio books. I never remember a single thing from the time I fall asleep. What are you supposed to do to bring about the learning?. Normal listening won't achieve it.
There are claims it improves the memory, although I think the jury is out on how effective it is. Lots of magazines and new outlets have run articles and programmes about it. Here's one from Business Insider http://uk.businessinsider.com/how-t...2016-3?r=US&IR=T/#3-where-you-put-something-3 I don't see how it could have anything to do with the occult unless that is the subject of the video or whatever other device is being used.
Not so much occult as quack psychology, I think. Years ago there was a short-lived craze for some language-learning program that claimed you could learn a new language by listening to some tapes while you slept. It sounds like just about the worst way to try and learn a language to me...