As you already know, human brain parts are out of sync, to push and hold humans in a state there they carry out programmed behavior like an automata. But as known in whole animal kingdom, a brain given by nature is build to cooperate as one part, with one whole EEG in a synchronized state.
The manipulated state of the mind won’t start to run synchronized without support. It must be triggered again and again, so near meditation there a some technical methods that may help. Because there is no reason for the body to reconnect the corpus callosum electric barrier, if the brain never require to run synchronized. It would take longer than 100 years and that’s it why human lifespan was also reduced, by the ancient beings who did this manipulation to us.