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The neural correlates of everyday recognition memory

Milton, F., Muhlert, Nils, Butler, C. R., Benattayallah, A. and Zeman, Adam Z. 2011. The neural correlates of everyday recognition memory. Brain and Cognition 76 (3) , pp. 369-381. 10.1016/j.bandc.2011.04.003

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We used a novel automatic camera, SenseCam, to create a recognition memory test for real-life events. Adapting a ‘Remember/Know’ paradigm, we asked healthy undergraduates, who wore SenseCam for 2 days, in their everyday environments, to classify images as strongly or weakly remembered, strongly or weakly familiar or novel, while brain activation was recorded with functional MRI. Overlapping, widely distributed sets of brain regions were activated by recollected and familiar stimuli. Within the medial temporal lobes, ‘Remember’ responses specifically elicited greater activity in the right anterior and posterior parahippocampal gyrus than ‘Know’ responses. ‘New’ responses activated anterior parahippocampal regions. A parametric analysis, across correctly recognised items, revealed increasing activation in the right hippocampus and posterior parahippocampal gyrus (pPHG). This may reflect modulation of these regions by the degree of recollection or, alternatively, by increasing memory strength. Strong recollection elicited greater activity in the left posterior hippocampus/pPHG than weak recollection indicating that this region is specifically modulated by the degree of recollection.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Uncontrolled Keywords: fMRI; Recognition memory; SenseCam; Recollection; Familiarity
Publisher: Elsevier
ISSN: 0278-2626
Last Modified: 04 Jun 2017 04:41

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