However, this effect was less apparent with memory for personal information when the format and the information tapped were matched on pre- and post-morbid tests. There was also a suggestion that performance on anterograde tests did not relate strongly to that on tests of retrograde amnesia of the remote pre-morbid past. ![]() They were more impaired in the recall of details about famous names in their ability to recognize such names. These deficits probably arose because the patients' anterograde amnesia was more severe than their retrograde amnesia even for the recent pre-morbid past. The amnesics also showed remote memory deficits for personal and public domain information, and temporal gradients were observed for some of the tests. The principal thalamic and hypothalamic structures implicated in mnemonic information processing are the mediodorsal nucleus of the thalamus, the pulvinar, anterior thalamus and laterodorsal nucleus, the mamillary body and the mamillothalamic tract and internal medullary lamina. Mild impairments on executive tests and digit span performance were largely caused by the poor performance of the Korsakoff patients. ![]() These showed that the patients had anterograde amnesia with deficits in verbal and non-verbal recall and recognition, but preservation of word stem completion and intelligence. People with anterograde amnesia may remember details about their high school prom, for instance, but have difficulty remembering what they ate for lunch on the current day. Anterograde amnesia is the inability to form new memories. ![]() An extensive battery of tests of anterograde amnesia and remote memory was given to ten amnesics with lesions either to the medial temporal lobes of the diencephalon. Retrograde amnesia usually affects more recently stored memories than older memories.
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