WOBIB: 78 - Maguire, Mummery (1999) Differential modula ...
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Eleanor A. Maguire; C. J. Mummery. Differential modulation of a common memory retrieval network revealed by positron emission tomography. Hippocampus 9(1):54-61, 1999. PMID: 10088900. WOBIB: 78.

Functional neuroimaging is uniquely placed to examine the dynamic nature of normal human memory, the distributed brain networks that support it, and how they are modulated. Memory has traditionally been classified into context-specific memories personally experienced ("episodic memory") and impersonal non-context-specific memories ("semantic memory"). However, we suggest that another useful distinction is whether events are personally relevant or not. Typically the factors of personal relevance and temporal context are confounded, and it is as yet not clear the precise influence of either on how memories are stored or retrieved. Here we focus on the retrieval of real-world memories unconfounding personal relevance and temporal context during positron emission tomography (PET) scanning. Memories differed along two dimensions: They were personally relevant (or not) and had temporal specificity (or not). Recollection of each of the resultant four memory subtypes-autobiographical events, public events, autobiographical facts, and general knowledge-was associated with activation of a common network of brain regions. Within this system, however, enhanced activity was observed for retrieval of personally relevant, time-specific memories in left hippocampus, medial prefrontal cortex, and left temporal pole. Bilateral temporoparietal junctions were activated preferentially for personal memories, regardless of time specificity. Finally, left parahippocampal gyrus, left anterolateral temporal cortex, and posterior cingulate cortex were involved in memory retrieval irrespective of person or time. Our findings suggest that specializations in memory retrieval result from associations between subsets of regions within a common network. We believe that these findings throw new light on an old debate surrounding episodic and declarative theories of memory and the precise involvement of the hippocampus.

Asymmetry: -0.97852 (left: -1, right: +1)

VRML2 file (73 Kb)

1 Memory retrieval. Memory retrieval of temporal, nontemporal, person relevant and irrelevant memories by listening to statements and responding with key press versus listening sets of words and pressing a button depending on number of syllables in last word. WOEXP: 243.
2 Memory retrieval with personal relevance and temporal specificity. Interaction between memory retrieval of temporal specificity and person relevance versus nontemporal and nonpersonal memory retrieval and sets of word listening. WOEXP: 244.

corner cube of WOBIB_78

Related - positive correlated volumes

+1: 1.00000 Eleanor A. Maguire; C. J. Mummery. Differential modulation of a common memory retrieval network revealed by positron emission tomography. Hippocampus 9(1):54-61, 1999. PMID: 10088900. WOBIB: 78.

+2: 0.62607 Turhan Canli; Heidi Sivers; Susan L. Whitfield; Ian H. Gotlib; John E. Gabrieli. Amygdala response to happy faces as a function of extraversion. Science 296(5576):2191, 2002. PMID: 12077407. DOI: 10.1126/science.1068749. FMRIDCID: . WOBIB: 156.

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+4: 0.52032 Eleanor A. Maguire; D. G. Gadian; I. S. Johnsrude; C. D. Good; J. Ashburner; Richard S. J. Frackowiak; C. D. Frith. Navigation-related structural change in the hippocampi of taxi drivers. Proc Natl Acad Sci U S A 97(8):4398-403, 2000. PMID: 10716738. DOI: 10.1073/pnas.070039597. WOBIB: 63.

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-2: 0.00087 I. Indovina; J. N. Sanes. On somatotopic representation centers for finger movements in human primary motor cortex and supplementary motor area. NeuroImage 13(6 Pt 1):1027-34, 2001. PMID: 11352608. DOI: 10.1006/nimg.2001.0776. WOBIB: 11.

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-5: 0.00382 Hans-Otto Karnath; S. Ferber; M. Himmelbach. Spatial awareness is a function of the temporal not the posterior parietal lobe. Nature 411(6840):950-3, 2001. PMID: 11418859. DOI: 10.1038/35082075. WOBIB: 59.

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