Again, not to one-up injuries, but for your interest, when I described my hit to a neurologist acquaintance, she said, "Yep, you had a concussion my friend." My recollection from the accident was realizing that I was going down on a tar seam, and trying to unclip my right foot, with a distinct visual memory of seeing my foot and the pavement. The next thing I remember was being helped to sit up, apparently by paramedics, so I must have been out of it for a few minutes. I assumed they were paramedics because they asked me cogent questions, like "Who is the president?" I couldn't remember, though I did recall thinking it's not Bill Clinton; the answer came to me seemingly within a minute. I did know immediately that it was Saturday in response to another question and said "See, I'm OK." Meanwhile I was recalling to myself that I was in Chelsea Michigan and had been riding north on Main Street.

Later in the Emergency Room, the ER doc discussed with me why she did not think a CAT scan was necessary, and I agreed, because I felt my faculties returned pretty quickly. Five days later when I had my stitches removed, the ER doc in Boston, whom I know well, did say that had it happened at his hospital, I would have had a CAT scan. I think, and he basically agreed, that is probably a reflection of regional differences in medical practice. BTW that Boston ER doc himself suffered a bicycling-related head injury that had him hospitalized a few years ago, and fortunately he is functioning well.