That's a good question, because I've never had an OBE. So...
I experience them during meditation, when Kundalni clears a chakra or when I manage to stabilize the thoughtless awareness.
I don't know about atoms, but I relate these vibrations to Kundalini manifestations, being so more subtle that matter. When living (our body) is enlightened through Kundalinin awakening, it can feel this manifestation, because senses get connected to it...
Is it the same?
It a bit out of topic, though...

I experience them during meditation, when Kundalni clears a chakra or when I manage to stabilize the thoughtless awareness.
I don't know about atoms, but I relate these vibrations to Kundalini manifestations, being so more subtle that matter. When living (our body) is enlightened through Kundalinin awakening, it can feel this manifestation, because senses get connected to it...
Is it the same?
It a bit out of topic, though...