"Buddhism," does use meditation to reach the inner parts of the mind.
Which would be like the dream state.
And it also beleives that life goes on forever,with rebirth after rebirth.
Only an "Enlightened One," can escape rebirth,as rebirth is the punishment.
When a man can find his way to Nirvana,thru meditation,then he has reached the most blissfull state there could be.
Peace,
Gautama Siddhattha