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Henry Gustav Molaison
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Transcript
Henry Gustav Molaison
The man who taught us about memory by losing his own
Background
- At 7 years old, Henry was knocked down by a bicycle and shortly after that he began having minor seizures at around the age of 10, and had major seizures after age 16.
- Throughout the years his seizures only got worse.
- At the age of 27, Henry and his family were approached by a renowned neurosurgeon, who offered them hope through an experimental brain operation. He told them that he might be able to take Henry's epilepsy away by removing significant portions of Henry's hippocampus, amygdala After years of struggling, they agreed to the surgery.
Background
Doctors realized not long after surgery that Henry could no longer make memories, but he was seizure free. He lived the remainder of his life, some fifty years, in roughly 30-second intervals.
Post Surgery
Henry became one of the most researched people in history as a result of his post surgery condition.
The studying done on Henry's brain was the source of groundbreaking new knowledge on the role of the hippocampus in memory
Henry's case had a significant impact on the development of theories that help to explain not only the development of cognitive neuropsychology but also the link between brain function and memory.
What did we learn from his expierence?
How did he change Psychology?
Henry opened the door for more research into the neurological networks in the brain that store conscious and unconscious memories.
Since Harry, our overall understanding of the structure and organization of memory has improved
Neuroscientists are still learning from his experience even though he passed away in 2008 at the age of 82.
References
- Squire, L. R. (2009). The legacy of patient HM for neuroscience. Neuron, 61(1), 6-9.
- O'kane, G., Kensinger, E. A., & Corkin, S. (2004). Evidence for semantic learning in profound amnesia: an investigation with patient HM. Hippocampus, 14(4), 417-425.
- Benjamin, S., MacGillivray, L., Schildkrout, B., Cohen-Oram, A., Lauterbach, M. D., & Levin, L. L. (2018). Six landmark case reports essential for neuropsychiatric literacy. The Journal of Neuropsychiatry and Clinical Neurosciences, 30(4), 279-290.
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