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  Neural bases of autobiographical support for episodic recollection of faces

Trinkler, I., King, J. A., Doeller, C. F., Rugg, M. D., & Burgess, N. (2009). Neural bases of autobiographical support for episodic recollection of faces. Hippocampus, 19(8), 718-730. doi:10.1002/hipo.20556.

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Trinkler, Iris1, Autor
King, John A.1, Autor
Doeller, Christian F.1, 2, Autor           
Rugg, Michael D.3, 4, Autor
Burgess, Neil1, 2, Autor
Affiliations:
1Institute of Cognitive Neuroscience, University College London, United Kingdom, ou_persistent22              
2Institute of Neurology, University College London, United Kingdom, ou_persistent22              
3Departmentof Neurobiology and Behavior, University of California, Irvine, CA, ou_persistent22              
4Center for the Neurobiology of Learning and Memory, University of California, Irvine, CA, ou_persistent22              

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Schlagwörter: hippocampus; retrosplenial cortex; medial prefrontal cortex; memory; fMRI
 Zusammenfassung: Incidental retrieval of autobiographical knowledge can provide rich contextual support for episodic recollection of a recent event. We examined the neural bases of these two processes by performing fMRI scanning during a recognition memory test for faces that were unfamiliar, famous, or personally known. The presence of pre‐experimental knowledge of a face was incidental to the task, but nonetheless resulted in improved performance. Two distinct networks of activation were associated with correct recollection of a face's prior presentation (recollection hits vs. correct rejections) on one hand, and with pre‐experimental knowledge about it (famous or personally known vs. unfamiliar faces) on the other. The former included mid/posterior cingulate cortex, precuneus, and ventral striatum. The latter included bilateral hippocampus, retrosplenial, and ventromedial prefrontal cortices. Anterior and medial thalamic activations showed an interaction between both effects, driven by increased activation for recollection of unfamiliar faces. When recollecting the presentation of a famous or personally known face, hippocampal activation increased with participants' ratings of how well they felt they knew the person shown. Ventromedial prefrontal cortex showed significantly greater activation for personally known than famous faces. Our results indicate a dissociation between the involvement of retrosplenial vs. mid/posterior cingulate and precuneus in memory tasks. They also indicate that, during recognition memory experiments, the hippocampus supports incidental retrieval of pre‐experimental knowledge about the stimuli presented. This type of knowledge likely underlies the additional recollection found for prior presentation of well known stimuli compared with novel ones and may link hippocampal activation at encoding to subsequent memory performance more generally.

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Sprache(n): eng - English
 Datum: 2008-11-272009-07-242009-08
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1002/hipo.20556
PMID: 19173228
 Art des Abschluß: -

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Titel: Hippocampus
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: New York, N.Y. : Wiley-Liss, Inc.
Seiten: - Band / Heft: 19 (8) Artikelnummer: - Start- / Endseite: 718 - 730 Identifikator: ISSN: 1050-9631
CoNE: https://pure.mpg.de/cone/journals/resource/954925593481