Neural oscillations are important to states of consciousness. There was an experiment where entraining high frequencies via electrical stimulation during REM sleep resulted in lucid dreams. Also, many anecdotal stories about entraining high frequencies resulting in a more awake, refreshed mindset. So yes, it's definitely a thing, and would be pretty interesting to experiment with during psychedelic trips...
That said, I'd rather not confuse neural oscillations with the whole quantum-hoodoo parallel universes stuff.
Do you believe in the THIRD SUMMER OF LOVE?