Distributed Cortical Systems in Visual Short-term Memory Revealed by Event-related Functional Magnetic Resonance Imaging

Munk, M. H. J., Linden, David Edmund Johannes ORCID: https://orcid.org/0000-0002-5638-9292, Muckli, L., Lanfermann, H., Zanella, F. E., Singer, W. and Goebel, R. 2002. Distributed Cortical Systems in Visual Short-term Memory Revealed by Event-related Functional Magnetic Resonance Imaging. Cerebral Cortex 12 (8) , pp. 866-876. 10.1093/cercor/12.8.866

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Abstract

The spatio-temporal distribution of brain activity as revealed by non-invasive functional imaging helps to elucidate the neuronal encoding and processing strategies required by complex cognitive tasks. We investigated visual short-term memory for objects, places and conjunctions in humans using event-related time-resolved functional magnetic resonance imaging that permitted segregation of encoding, retention and retrieval phases. All conditions were accompanied by the activation of a widespread network of parietal and prefrontal areas during the retention phase, but this retention-related activity showed additional modulations depending on task instructions. These modulations confirmed a posterior — anterior and right — left dissociation for spatial versus non-spatial memory and revealed that conjunction memory does not rely on a linear addition of the component processes.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine Psychology MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG) Neuroscience and Mental Health Research Institute (NMHRI)
Subjects:	B Philosophy. Psychology. Religion > BF Psychology R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher:	Oxford University Press
ISSN:	1460-2199
Last Modified:	21 Oct 2022 08:55
URI:	https://orca.cardiff.ac.uk/id/eprint/34795

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