Update 4

Aug. 8th, Day 5 update...he came out of his 5th and final surgery today at 4:30 pm. After researching coma patients/ brain injuries, apparently, tapping into their long term memory with familiar voices, stories and their favorite music can help stimulate brain activity. He did have some jerking movements but whether that was brought on by the music I played or a coincidence, we don't know. Maybe I should play music he hates so he'll wake up and tell me to stop. :-)
They will take him off sedation again around midnight to see of there is any response.
His body is responding to pain, not commands. Not what you want to hear.