HM Had Part of His Brain Removed in 1953 When

question 253

Essay

H.M. had part of his brain removed in 1953 when he was 27 years old. H.M.'s disorder had been life-threatening and so the surgery had been a medical necessity. But the surgery did have profound effects on H.M.'s memory. What brain structure was removed? Integrate information regarding the reconstruction of memory with information on the brain presented earlier in the text. Using the three-box model of memory, explain how the flow of information has been disrupted in H.M.

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Definitions:

Changing Phase

The process of transitioning from one state, condition, or stage to another, often marking a significant shift or transformation.

Refreezing Phase

The final stage in the change process where new behaviors are solidified into the organization's culture, ensuring changes are maintained over time.

Organization

An arranged group of people and resources structured and managed to meet a need or pursue collective goals.

Human Nature

The inherent characteristics, behaviors, and traits shared by all humans, often considered in the context of moral, social, and philosophical discussions.