Psychodalics are known to now every psychodolic study er, and this is a very robust effect that has been replicated motiple times. They only reduce brain activity. The only thing they increase is just noise, its incoherent brain activity. In many instances, a brain noise actually decreases during a psychodolic trip, and the person still has the experience. So that's not avilable account physiological account for the psychodolic experience. All other experiences seem to correlate with brain activation, but the psychodelic experience only reduces a activation quite significantly.
In this expansive conversation, Michael Shermer speaks with Bernardo Kastrup, the executive director of Essentia Foundation. His work has been leading the modern renaissance of metaphysical idealism, the notion that reality is essentially mental. He has a Ph.D. in philosophy (ontology, philosophy of mind) and another Ph.D. in computer engineering (reconfigurable computing, artificial intelligence). Shermer and Kastrup discuss: materialism, idealism, dualism, monism, panpsychism, free will, determinism, consciousness, the problem of other minds, artificial intelligence, out of body and near-death experiences, model dependent realism, and the ultimate nature of reality.