Common and unique neural activations in autobiographical, episodic, and semantic retrieval

Burianova, H. and Grady, C. L. (2007) Common and unique neural activations in autobiographical, episodic, and semantic retrieval. Journal of Cognitive Neuroscience, 19 9: 1520-1534. doi:10.1162/jocn.2007.19.9.1520

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Author Burianova, H.
Grady, C. L.
Title Common and unique neural activations in autobiographical, episodic, and semantic retrieval
Journal name Journal of Cognitive Neuroscience   Check publisher's open access policy
ISSN 0898-929X
Publication date 2007-01-01
Year available 2007
Sub-type Article (original research)
DOI 10.1162/jocn.2007.19.9.1520
Open Access Status File (Publisher version)
Volume 19
Issue 9
Start page 1520
End page 1534
Total pages 15
Place of publication Cambridge, MA, United States
Publisher M I T Press
Language eng
Abstract This study sought to explore the neural correlates that underlie autobiographical, episodic, and semantic memory. Autobiographical memory was defined as the conscious recollection of personally relevant events, episodic memory as the recall of stimuli presented in the laboratory, and semantic memory as the retrieval of factual information and general knowledge about the world. Our objective was to delineate common neural activations, reflecting a functional overlap, and unique neural activations, reflecting functional dissociation of these memory processes. We conducted an event-related functional magnetic resonance imaging study in which we utilized the same pictorial stimuli but manipulated retrieval demands to extract autobiographical, episodic, or semantic memories. The results show a functional overlap of the three types of memory retrieval in the inferior frontal gyrus, the middle frontal gyrus, the caudate nucleus, the thalamus, and the lingual gyrus. All memory conditions yielded activation of the left medial-temporal lobe; however, we found a functional dissociation within this region. The anterior and superior areas were active in episodic and semantic retrieval, whereas more posterior and inferior areas were active in autobiographical retrieval. Unique activations for each memory type were also delineated, including medial frontal increases for autobiographical, right middle frontal increases for episodic, and right inferior temporal increases for semantic retrieval. These findings suggest a common neural network underlying all declarative memory retrieval, as well as unique neural contributions reflecting the specific properties of retrieved memories.
Keyword Neurosciences
Psychology, Experimental
Neurosciences & Neurology
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Advanced Imaging Publications
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Citation counts: TR Web of Science Citation Count  Cited 113 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 121 times in Scopus Article | Citations
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