After having brain surgery to stop severe seizures, Henry Molaison could recall events he experienced prior to the surgery but was unable to form new conscious memories. Molaison's memory difficulty most clearly illustrates .

Anterograde amnesia

Explanation:

Anterograde amnesia occurs when there is a loss in the ability to create new memories after the event like some traumatic brain injury or a mental shock that caused amnesia. This can lead to either a partial or complete inability to recall the recent past but memories that happened long before the event tend to remain intact. This is different from retrograde amnesia. Here , memories created prior to the event are lost while new memories can still be created. Sometimes, Both retrograde and anterograde can occur together in the same patient. It is found out that the regions involved in anterograde amnesia are some sites in the temporal cortex, especially in the hippocampus and nearby subcortical regions.

Molaison and Sufferers like him then to repeat comments and questions several times and they also fail to recognize people they met just minutes before.

Anterograde amnesia

Explanation:

Anterograde amnesia is the inability of a person to create new memories after having brain surgery to stop severe seizures which now leads to amnesia.

In order word Anterograde amnesia caused Henry Molaison not to recall or remember recent or process recent event in which he can only remember old memories.

Anterograde amnesia has no cure and medication for the treatment although the person may be rehabilitated despite the damage.

Therefore Molaison's memory difficulty most clearly illustrates ANTEROGRADE AMNESIA.

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