You're misreading this sentence: > I am of the opinion that resolving trauma that causes a person to "zone out" and sleep walk through life can have equivalent

You're misreading this sentence: > I am of the opinion that resolving trauma that causes a person to "zone out" and sleep walk through life can have equivalent effect to psychedelics. The phrase "that causes a person to 'zone out' and sleep walk through life" is meant to describe "trauma", not "resolving trauma". You should read it as "resolving (trauma that causes a person to 'zone out')", not "(resolving trauma) that causes a person to 'zone out'".