I don't think there is anything else in your head. I think your head is just no elementary, sub atomic particles forming atoms, molecules and their respective feuds. And that sometimes that feud can dissociate and form whats technically called altars. So the idea is we stop thinking about the brain as the cause and start thinking about it as what the process looks like. If you do that, y interesting, ye. You would still be a reductionist naturalist, but you start from a very fundamentally different assumption about the essence of reality. And your that problem altogether.
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.