OK...you have never been afraid...maybe I missed something?
At any rate. Seared with what looks to be some life remaining in the middle is the way to go.
I've eaten a large variety of wild game over my lifetime but never included brains on the menu. I do know people who have. Nothing about that sounds remotely appetizing to me. But I guess you never know until you try it. In my case I'll never know.
LOL...I don't blame you. I won't again. It's fairly common in rural areas.