Just a thought, this discussion may become very relevant, the age of display pilots seems to be increasing and the effects of ci may become a wider concern
my own take is that ci is being taken to be a form of TIA or transient ischamic attack, a heart attack of the brain of you will. This is caused by either a clot caused by any element of vichod’s triad or good old fashioned congestion of the arteries. If a TIA has occurred the medical history of brain scans may show this. It will of course be complicated by any head trauma and I understand there was a lot. However, the signs may well still be there. Would the board have had access to this?