One of my random interests is psychology. I am currently taking an introductory psychology class at my university and it is very interesting. About a month ago, we started studying memory. We talked about a man named Clive Wearing and I did some more research on him a few weeks ago.
What I found out is rather depressing, actually. Wearing was an eminent musicologist who contracted a virus in 1985 that attacked his brain, causing sever retrograde amnesia and anterograde amnesia. Oliver Sacks wrote a beautiful essay in The New Yorker in 2007 about Clive Wearing:
In March of 1985, Clive Wearing, an eminent English musician and musicologist in his mid-forties, was struck by a brain infection—a herpes encephalitis—affecting especially the parts of his brain concerned with memory. He was left with a memory span of only seconds—the most devastating case of amnesia ever recorded. New events and experiences were effaced almost instantly....
In addition to this inability to preserve new memories, Clive had a retrograde amnesia, a deletion of virtually his entire past.
When he was filmed in 1986 for Jonathan Miller’s extraordinary documentary “Prisoner of Consciousness,” Clive showed a desperate aloneness, fear, and bewilderment. He was acutely, continually, agonizingly conscious that something bizarre, something awful, was the matter. His constantly repeated complaint, however, was not of a faulty memory but of being deprived, in some uncanny and terrible way, of all experience, deprived of consciousness and life itself....
I'd highly recommend reading
the entire article. It is extremely sad. Wearing has improved over the years--he is not depressed like he was when he first became amnesic. Luckily, he has a devoted and loving wife who has stayed with him all these years, and he also still remembers how to play the piano (this is procedural memory, and his procedural memory is intact).