Barely 5 minutes after lying down, I voluntarily triggered a vibratory state.

There were little or no images, but a buzzing sound, pleasant vibrations, and a rapid suction sensation the moment I lifted my eyes upward with my eyelids closed.

During the suction, I saw ovoid shapes that I followed with my eyes, and then I was pulled very, very quickly (1–2 seconds?) before entering a pleasant silence accompanied by a floating sensation (3–4 seconds?).... Then came a gentle return of physical sensations.

No actual astral projection/out-of-body experience...

I voluntarily repeated the experience a second time 5–10 minutes later.

I notice that voluntarily triggering the first vibratory state seems to spare me (maybe?) from the repeated spontaneous vibratory states that used to last one or two hours, which I had been experiencing over the past two weeks.