Updated: Feb 18, 2020
How about, what is not in your mind? Or is what you see, hear, smell, touch, and taste not it at all?
Neurology and Zen have had many dance partners The Dalai Lama's work at the Emory School of Medicine or the work of Dr. James H. Austin, a retired academic neurologist, and longtime Zen practitioner.
Austin writes of egocentric and allocentric awareness the former establishes reality in relationship to "me," while allocentric is not ego-relational, but just a form. https://tricycle.org/magazine/your-brain-zen/