|[The] explicit memory fades relatively rapidly in the absence of recall and refreshing and prone to distortion (Cohen and Squire, 1980; Squire., et al., 1993; Squire, 2004).
Neuropsychological studies on patients, mainly pioneered by Brenda Millner with the famous H.M. case, have shown that the multiple memory systems involve distinct brain areas, especially the medial temporal lobe, and exhibit distinctive features (Scoville and Milner, 1957).
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• Scoville WB and Milner B (1957) Loss of recent memory after bilateral hippocampal lesions. J Neurol Neurosurg Psychiatry.20:11-21.
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• Squire LR (2004) Memory systems of the brain: a brief history and current perspective. Neurobiol Learn Mem 82:171-177.
Neuropsychological studies on neurological patients, mainly pioneered by Brenda Millner with the famous H.M. case, have shown that the multiple me-
mory systems involve distinct brain areas and exhibit distinctive features. Thus, explicit memory needs an intact medial temporal lobe (hippocampus), [...]
However, while explicit memory fades relatively rapidly in the absence of recall and refreshing, implicit memory is much more robust and may last for all our life even in the absence of further practice (4, 5).
4. Blackemore C. Mechanics of the mind. Cambridge; Cambridge University Press, 1977.
5. Kandel ER, Pittenger C. The past, the future and the biology of memory storage. Philos Trans R Soc Lond B Biol Sci 1999; 354: 2027-52.