Answer :
H. M. Was unable to form any new semantic memories because of the removal of his medial temporal lobe. It includes the area of the hippocampus.
H.M. attempts to control seizures and he went for brain surgery to remove his hippocampus and amygdala. The result of this surgery decreased the seizures but he could not form new memories. And he can remember only eleven years of his life. This surgery severely affected his ability to form new semantic memories.
His complete name was Henry Gustav Molaison and his condition was defined as heavy amnesia and temporary retrograde amnesia. The removal of the medial temporal lobe is responsible for the memory disorder.
To learn more about the hippocampus from the given link:
https://brainly.com/question/13314896
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