Did HM have anterograde or retrograde amnesia?Did HM have anterograde or retrograde amnesia?

Molaison’s general condition has been described as heavy anterograde amnesia, as well as temporally graded retrograde amnesia. Since Molaison did not show any memory impairment before the surgery, the removal of the medial temporal lobes can be held responsible for his memory disorder.Click to see full answer. Also know, is retrograde amnesia more common than anterograde?Anterograde amnesia is the more common of the two. Sometimes both these types of amnesia may occur together, sometimes called total or global amnesia. Another type of amnesia is post-traumatic amnesia, a state of confusion and memory loss that occurs after a traumatic brain injury.Subsequently, question is, what part of the brain is responsible for anterograde amnesia? Damage that produces anterograde amnesia involves the hippocampus and related parts of the temporal lobe and also related parts of the limbic system. The first clear evidence that the temporal lobe played an essential part in memory came from patient HM, who had an operation to control life-threatening seizures. Correspondingly, what type of memory did HM lose? Henry’s memory loss was far from simple. Not only could he make no new conscious memories after his operation, he also suffered a retrograde memory loss (a loss of memories prior to brain damage) for an 11-year period before his surgery.Is anterograde amnesia a psychological disorder?It may also be caused by a shocking event or an emotional disorder. Illness, though much rarer, can also cause anterograde amnesia if it causes encephalitis, which is the inflammation of brain tissue. This suggests that memory consolidation for different types of memory takes place in different regions of the brain.

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