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Neurobiol Learn Mem. 2012 Jul;98(1):78-92. doi: 10.1016/j.nlm.2012.05.002. Epub 2012 May 29.

Behavioral and neuroanatomical investigation of Highly Superior Autobiographical Memory (HSAM).

Author information

1
Center for the Neurobiology of Learning and Memory, Department of Neurobiology and Behavior, University of California, Irvine, CA 92697, USA. aleport@uci.edu

Abstract

A single case study recently documented one woman's ability to recall accurately vast amounts of autobiographical information, spanning most of her lifetime, without the use of practiced mnemonics (Parker, Cahill, & McGaugh, 2006). The current study reports findings based on eleven participants expressing this same memory ability, now referred to as Highly Superior Autobiographical Memory (HSAM). Participants were identified and subsequently characterized based on screening for memory of public events. They were then tested for personal autobiographical memories as well as for memory assessed by laboratory memory tests. Additionally, whole-brain structural MRI scans were obtained. Results indicated that HSAM participants performed significantly better at recalling public as well as personal autobiographical events as well as the days and dates on which these events occurred. However, their performance was comparable to age- and sex-matched controls on most standard laboratory memory tests. Neuroanatomical results identified nine structures as being morphologically different from those of control participants. The study of HSAM may provide new insights into the neurobiology of autobiographical memory.

PMID:
22652113
PMCID:
PMC3764458
DOI:
10.1016/j.nlm.2012.05.002
[Indexed for MEDLINE]
Free PMC Article

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