Same exact symptoms (the bass guitar string he heard is a thing that gave me ptsd like symptoms/crippling anxiety for a long time after) I had from a TIA when I was overworked. He waited getting a scan so they could've missed it later; my office was next to the hospital: nothing showed on the CT one hour after but on the RMI a couple of hours after they found a tiny lesion in one of the regions involved in forming sp…
I had been having minor strokes constantly, just not large enough to show up on MRI.