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Similarities in the patterns of prefrontal cortex activity during spatial and temporal context memory retrieval after equating for task structure and performance.

Abstract：

:Event-related functional magnetic resonance imaging was used to assess healthy adults while they performed spatial and temporal context memory tasks matched in task structure. After equating task structure between spatial versus temporal context tasks, subjects reported using similar strategies across tasks and we observed no significant differences in accuracy and reaction time performance between tasks. We used three methods of statistical analysis to interrogate similarities and differences in whole-brain activity across retrieval tasks, while focussing on prefrontal cortex (PFC) activations: multivariate partial least squares analysis (PLS), univariate statistical parametric mapping (SPM) and conjunction analysis. The PLS and conjunction analyses indicated that the overall pattern of PFC activity was similar across both temporal and spatial context retrieval tasks; but the SPM results indicated that some of these PFC regions exhibited differences in the degree to which they were engaged between tasks. However, none of these methods identified unique PFC activations specific to mediating spatial and/or temporal context retrieval. These results indicate that, overall, similar patterns of PFC activity were observed during temporal and spatial context memory retrieval once task structure and performance were equated.

journal_name

Neuroimage

journal_title

NeuroImage

authors

Crane D,Maillet D,Floden D,Valiquette L,Rajah MN

doi

10.1016/j.neuroimage.2010.09.001

subject

Has Abstract

pub_date

2011-01-15 00:00:00

pages

1549-64

issue

2

eissn

1053-8119

issn

1095-9572

pii

S1053-8119(10)01170-5

journal_volume

54

pub_type

杂志文章

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