"Integrative" simply means that this approach attempts to include as many important truths from as many disciplines as possible-from East as well as the West, from premodern and modern and postmodern, from the hard sciences of physics to the tender sciences of spirituality.
Ken WilberThe Realization of the Nondual traditions is uncompromising: There is only Spirit, there is only God, there is only Emptiness in all its radiant wonder. All the good and all the evil, the very best and the very worst, the upright and the degenerate- each and all are radically perfect manifestations of Spirit precisely as they are. There is nothing but God, nothing but the Goddess, nothing but Spirit in all directions, and not a grain of sand, not a speck of dust, is more or less Spirit than any other.
Ken WilberThe point of the overall meditative path is to have Wakefulness (or Consciousness as Such) transcend and include all state-realms, so it ceases to "black out" or "forget" various changes of state (such as dreaming and deep sleep), and instead recognizes a "constant Consciousness" or ever-present nondual Awareness, the union (and transcendence) of individual finite self and infinite Spirit.
Ken Wilber