This article Consciousness: What is it, and Where is it Found? published in the Sydney Traditionalist Forum offers reasons for thinking that though the brain and consciousness are frequently correlated, the brain does not actually generate consciousness. Oftentimes, the facts are not in dispute on this topic. It has more to do with their implications. When, for instance, there are cases of hydrocephalus where 95% of the brain is missing but the person has no cognitive deficits and is actually above average intelligence, the notion that brain mapping will get us very far seems slim; as does the fact of neuroplasticity where parts of the brain get repurposed after a stroke in a case of top down causation.
Placebos and nocebos seem to have mind over matter implications too and their existence was initially strongly resisted by materialist-minded scientists for that reason – meaning, they actually recognized the non-materialist possible ramifications.
Near Death Experiences also suggest that consciousness can exist without brains which is good news for anyone interested in the possibility of an afterlife. The cardiologist Pim van Lommel provides good scientific reasons for thinking that NDEs have nothing to do with residual brain activity during cardiac arrests or resuscitations. Apparently, for instance, manual manipulation of the heart during CPR is physically incapable of pumping enough blood around the body to restore consciousness, even partially.
The article ends with suggestions about the real relationship between minds and brains, and ideas about the nature and meaning of human existence.