I think this would be very useful for evocation. Especially if you made your own audio tracks of whispered chants and invocations.
I suspect these videos are engaging the dreaming attention. The barely audible sounds force the brain to fill in the blanks, the very same mechanism which fills in the blanks when building your dream world.
Familiarizing yourself with this feeling should allow you to have spontaneous lucid dreams through recognition of that feeling. Also I think this is what people call Kundalini.
Activating this dreaming attention during an evocation will allow it to fill in the details of whatever you want to evoke. Only came across this today, so not really sure how best to use it yet, but the intrepid among you should be able pull something off.