I don't have time to read much, but from what I have read--this sounds like what we experience here in jhana. Due to their perspective of yoga, it's helped me see into curiosities I've had. Such as why some nimitta pearls are white, some are black, and so on. It's time to meditate, so I will come back. Good find.
I found this to be quite insightful. It's from the first link.
"RAPTURE
During meditation, you get rapture or ecstasy. It is of five kinds viz., the lesser thrill, momentary rapture, flooding rapture, transporting rapture and all-pervading rapture. The lesser thrill is only able to raise the hairs of the body (like the goose skin). The momentary rapture is like the productions of lightning, moment by moment. Like waves breaking on the seashore, the flooding rapture descends rapidly on the body and breaks. Transporting rapture is strong and lifts the body up to the extent of launching it into the air. When the all-pervading rapture arises, the whole body is completely surcharged, blown like a full-bladder."
