Distributed cortical systems in visual shortterm memory revealed by eventrelated functional magnetic resonance imaging.

M.E. Munk; D.E. Linden; L.F. Muckli; H. Lanfermann; F.E. Zanella; W. Singer; R.W. Goebel

doi:10.1093/cercor/12.8.866

Distributed cortical systems in visual shortterm memory revealed by eventrelated functional magnetic resonance imaging.

M.E. Munk^*, D.E. Linden, L.F. Muckli, H. Lanfermann, F.E. Zanella, W. Singer, R.W. Goebel

^*Corresponding author for this work

Cognitive Neuroscience

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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.

Original language	English
Pages (from-to)	866-876
Journal	Cerebral Cortex
Volume	12
DOIs	https://doi.org/10.1093/cercor/12.8.866
Publication status	Published - 1 Jan 2002

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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.",

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AU - Zanella, F.E.

AU - Singer, W.

AU - Goebel, R.W.

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AB - 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.

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