2.2 Explain one study related to localization of function in the brain.
Explain the study of H.M.
H.M. suffered from epileptic seizures after falling from a bike at the age of 7. When H.M. was 27, the neurosurgeon William Scoville, preformed experimental surgery in order to stop the seizures. He removed tissue from the medial temporal lobe including the hippocampus. After the operation H.M. suffered from amnesia. He could not create new episodic and semantic memories, but was able to learn a few procedural memories. This case study shows that the hippocampus is important in the storage of new memories.
What can be learned about localization of function in the brain in relation to memory from the case study of H.M.?
* The hippocampus and the areas around it play a critical role on in converting memories of experiences from STM to LTM. * H.M. could retain memories from before the surgery. This indicates that the hippocampus is temporary rather than a permanent memory store * H.M. could learn few procedural memories, which indicates that those types of memories are not stored in the hippocampus. * The fact that H.M. (+ others with amnesia) had deficits in one part of the memory system but not others, is evidence that the brain has several memory systems.