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Amnesiac - A história de Henry Molaison (H M ) [Legendado]video play button


Henry McGlasson is not a well man. A childhood fall has damaged his brain irreparably about you. Well, what is it? Uh, I must do something. Theo Accident has left him with severe epilepsy by his late twenties. Is having over 10 fits a day. You can't live alone. Can't drive fits in. Take him at any time. Mike My, where are normal? Electrical activity of the brain occurs in regular patterns like this, but during a seizure, abnormal rhythms are established that wash across the brain using the brain's own communication lines. The net result is that the brain loses control of the body, and it can result in tonic clinic seizures, short term memory loss and, in some circumstances, even death. Dr. William Beaches Scoville is an authority on brain disorders, but Henry Malala's and has him stumped. He's tried every known epileptic drug, but nothing works. Brain science today is in its infancy, but in the 19 fifties it had barely reached conception. There was a rough idea of what areas of the brain responsible for which processes, but the ways they interacted or worked together weren't really known. In fact, most of what was known was only known because of people who had survived brain injuries. And so everything new that was attempted was a step in the dark. School is a charismatic, high octane risk taker to help molasses, and he got a new and radical idea. In my lifetime, I'd like to try something, Henry. Usually, when a brain short circuits like yours, we take out half a region called the Hippocampus. Only your case is so severe, I'd like to take out the whole thing now. It's never been done before, but I've got a hunch it'll work. It's thought that some epileptic seizures may be caused by an excess of the neurotransmitter glutamate in the brain. Now, when there's too much glutamate, an excess of calcium is released, and inside the brain, that could be very dangerous. Now the hippocampus generates glutamate, and so removing it should decrease calcium levels and decrease the frequency of seizures. Donald Duck sounds kinda risky. Life is risk, Henry, and to be honest, it is a life Bob, what have you got to lose? Scoville was willing to perform this surgery because his patient was in desperate need. He had very uncontrolled epilepsy. He had very little quality of life. Still, he was playing a little bit fast and loose because he didn't know what the outcome would be. Despite his uncertainty, Henry agrees to the surgery. Dr. Scoville burns out Henry's entire hip a canvas time will tell if he is being bold or Rickles In all new surgical procedures. There's an element of risk, but there's also a first time when it must be tried in a human patient. These days we would review procedures like this through institutional review boards. But in Scoville is time. Much more was left to the discretion of the surgeon after a few days Signs. Good morning, entering. Not a single fit, Doc. Tremendous. Nothing for days now. Henry, this is Dr Brenda Milner. She'll be doing some tests with you today. It's a pleasure to meet that. Oh, and you're working with the best. You know, Doc Scoville is an ace. Enjoy your breakfast. Henry Henry's epilepsy seems to be cured. So what's the problem? Just wait. Dr. Scoville didn't know what the hippocampus really did. I mean, no one did. The operation was pure trial and error. What he did know was that less hippocampus meant fewer seizures. Morning. Hey, steady as a Chevy, Doc. That's great. I, um I'm Henry, Please to me, man. See what I mean? Henry's operation has Dunmore than effect is epilepsy. Henry's memories up to the operation are largely undamaged. We went to Florida. Mom and Dad took turns driving. I had my head out the window. Listen, Finch in the hallway down. Good. Now what do you remember about yesterday? Um, now I think about it. Not a lot, but he cannot create new memories at all. How about this morning? Yeah. I don't remember. Henry. You tell me what you just had for lunch. Henry M. Eliasson is a tragic victim and a scientific miracle. Something has gone wrong with Henry M. Eliasson's brain during radical surgery to treat his epilepsy. Henry, this is Dr Brenda Milner. It's a pleasure to be in that it's a pleasure to meet you. It's a pleasure to meet you, man. That's appointed to meet you, man. Henry's memory is broke, but his condition could provide unique insights into the workings of the human brain. We can experiment on the brains of mice all we want, but a mouse cannot tell us what it's thinking or feeling. So the uncomfortable truth is that Henry was a godsend to brain researchers by looking at what he could or could not do, they could figure out how memory works. Okay, Henry, I'd like you to remember the number 273 key. Do that Got to 73 right. I'll be back in 15 minutes. Don't forget to 73 The doctors are fascinated by what he can and can't recall on the number is 273 right? How did you remember it? I just kept thinking about it. That's wonderful. Sorry. Have we met? I'm ending Molaison. So what can we say? Quarter an hour? Henry's condition transforms our understanding of memory are immediate moment to moment. Impressions of the world are recorded in short term memory, short term memories of fleeting. To remain in the brain. They must be transferred into long term memory. Filed away for future recall way. No thanks to Henry. Now that the hippocampus is crucial in the creation of new long term memories, it takes memories of what's happening now and makes them into things that we can recall about last week. About last year. They're not stored in the hippocampus, but the hippocampus is very important in creating them. Henry becomes the most famous patient in neuroscience, a man imprisoned in the presence. So tell me what you remember about your last fit. But for Dr Scoville, life moves on. He too must learn to forget school bills. Surgical procedure made him world famous. But we know from some of his colleagues that he felt guilty about the destruction that he had created. There is a cost to going first. It's a cost that someone has to bear. Some people will work with Henry for over 40 years. Morning. I'm Dr Milner. Every morning they will have to introduce themselves to him for the first time. Well, this looks real interesting. I'm I'm Henry, by the way. They like to meet you. Where's Doc Scoville? Well, I'd like to work with you today. That's OK, Henry. I'm gonna ask you to take a pencil, and I just want you to draw around the star as best as you can, OK? Right on. I'm gonna take some notes. All right. Tracing a line while watching your hand in a mirror is totally counterintuitive. Nobody can come to that task and get it right away. What it takes is practice. Hi, I'm Dr Miller. You won't take seat over here. Henry has no idea he's tried this before. Well, im Henry Molaison high. Well, now you got here. His defective memory prevents him from remembering his many previous attempts get Each time Henry skill improves. It's a so his body remembers what his mind cannot. It's got easy. Henry reveals that our understanding of memory is hopelessly simplistic. There is not just one type of memory there, at least two procedural and declarative declarative memories are the things that you remember remembering the places you've been, things you've said to people, things they've said to you. We went to Florida. But procedural memory allows us to accomplish tasks physical ones like driving a car or riding a bike. Now you can drive in a car and have a conversation with somebody, and when you reach your destination, you will remember the conversation. That's the clarity of memory. But you won't remember all of the thinking. It took tow. Operate the vehicle and successfully get to your destination, which is procedural memory. Well, im n'dri Henry once he's learned a new skill even years later. Henry never forget you got here. You could say that Henry's bad luck was our good luck. Through Henry, we learned about things like declarative and procedural memory, and we learned their importance in the fight against diseases like dementia