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Cold Spring Harb Perspect Biol. 2015 Mar 2;7(3):a021667. doi: 10.1101/cshperspect.a021667.

Conscious and unconscious memory systems.

Author information

1
Veterans Affairs, San Diego Healthcare System, San Diego, La Jolla, California 92161 Departments of Psychiatry and Neurosciences, University of California, San Diego, La Jolla, California 92093 Department of Psychology, University of California, San Diego, La Jolla, California 92093.
2
Department of Psychology, University of California, San Diego, La Jolla, California 92093.

Abstract

The idea that memory is not a single mental faculty has a long and interesting history but became a topic of experimental and biologic inquiry only in the mid-20th century. It is now clear that there are different kinds of memory, which are supported by different brain systems. One major distinction can be drawn between working memory and long-term memory. Long-term memory can be separated into declarative (explicit) memory and a collection of nondeclarative (implicit) forms of memory that include habits, skills, priming, and simple forms of conditioning. These memory systems depend variously on the hippocampus and related structures in the parahippocampal gyrus, as well as on the amygdala, the striatum, cerebellum, and the neocortex. This work recounts the discovery of declarative and nondeclarative memory and then describes the nature of declarative memory, working memory, nondeclarative memory, and the relationship between memory systems.

PMID:
25731765
PMCID:
PMC4355270
DOI:
10.1101/cshperspect.a021667
[Indexed for MEDLINE]
Free PMC Article

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