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The Neural Correlates of Everyday Recognition Memory

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Bibliographic Details
Title: The Neural Correlates of Everyday Recognition Memory
Language: English
Authors: Milton, F., Muhlert, N., Butler, C. R.
Source: Brain and Cognition. Aug 2011 76(3):369-381.
Availability: Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail: usjcs@elsevier.com; Web site: http://www.elsevier.com
Peer Reviewed: Y
Physical Description: PDF
Page Count: 13
Publication Date: 2011
Document Type: Journal Articles
Reports - Evaluative
Education Level: Higher Education
Postsecondary Education
Descriptors: Recognition (Psychology), Brain, Brain Hemisphere Functions, Novelty (Stimulus Dimension), Familiarity, Photography, Undergraduate Students
DOI: 10.1016/j.bandc.2011.04.003
ISSN: 0278-2626
Abstract: 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. (Contains 5 tables and 6 figures.)
Abstractor: As Provided
Entry Date: 2011
Accession Number: EJ927434
Database: ERIC
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  Data: 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. (Contains 5 tables and 6 figures.)
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