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Scenario II
Famous within psychology,patient HM had parts of his temporal lobes-including his hippocampus-removed to stop incurable and life-threatening epileptic seizures.The surgery was successful;however,patient HM was left with a severe case of anterograde amnesia.Subsequent tests found that his short-term and implicit memory systems were not affected by the surgery.
-(Scenario II)As a result of the surgery,HM could NOT:
A)remember a relative's phone number called frequently in the decade preceding the surgery.
B)successfully hold a phone number in memory for 15 seconds by mentally rehearsing it.
C)remember a phone number called repeatedly an hour ago.
D)remember how to use a telephone.

Question

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Scenario II
Famous within psychology,patient HM had parts of his temporal lobes-including his hippocampus-removed to stop incurable and life-threatening epileptic seizures.The surgery was successful;however,patient HM was left with a severe case of anterograde amnesia.Subsequent tests found that his short-term and implicit memory systems were not affected by the surgery.
-(Scenario II)As a result of the surgery,HM could NOT:
A)remember a relative's phone number called frequently in the decade preceding the surgery.
B)successfully hold a phone number in memory for 15 seconds by mentally rehearsing it.
C)remember a phone number called repeatedly an hour ago.
D)remember how to use a telephone.

Quizplus · Accepted Answer

The scenario states that HM suffered from severe anterograde amnesia after the surgery, which means he was unable to form new memories or recall events that occurred after the surgery. Therefore, he would not be able to remember a phone number called repeatedly an hour ago, as this falls under the category of recent memory. Option A refers to a phone number called frequently in the decade preceding the surgery, which is a long-term memory, and therefore not affected by his anterograde amnesia. Option B refers to holding a phone number in memory for 15 seconds by mentally rehearsing it, which is a short-term memory process that was not affected by the surgery. Option D refers to knowing how to use a telephone, which is a procedural or implicit memory, and also not affected by the surgery. Hence, option C is the correct answer.

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