Lucid dreamer here. I often feel the "switch" the same way you do, and I ride through it as the images transistion into the "dream world". Through this I can di

Lucid dreamer here. I often feel the "switch" the same way you do, and I ride through it as the images transistion into the "dream world". Through this I can directly enter into a lucid dream if I choose to keep my conscious mind slightly active, else it becomes a passive dream (though sometimes I do discover that I'm dreaming and it then becomes lucid once more). I have to be cautious here though, as if I start thinking too hard I snap out of it and return to consciousness. During this time sleep paralysis is almost always in effect. Basically I can listen and think, but there is a gate on my muscles - small motions like twitching my fingers won't work, strong motions cut through (and immediately stops the paralysis). To me it generally happens when my mind is about to switch off and I am on the verge of falling asleep.