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Episodic encoding is more than the sum of its parts: An fMRI investigation of multifeatural contextual encoding

Uncapher, MR; Otten, LJ; Rugg, MD; (2006) Episodic encoding is more than the sum of its parts: An fMRI investigation of multifeatural contextual encoding. NEURON , 52 (3) 547 - 556. 10.1016/j.neuron.2006.08.011. Green open access

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Abstract

Episodic memories are characterized by their contextual richness, yet little is known about how the various features comprising an episode are brought together in memory. Here we employed fMRI and a multidimensional source memory procedure to investigate processes supporting the mnemonic binding of item and contextual information. Volunteers were scanned while encoding items for which the contextual features (color and location) varied independently, allowing activity elicited at the time of study to be segregated according to whether both, one, or neither feature was successfully retrieved on a later memory test. Activity uniquely associated with successful encoding of both features was identified in the intra-parietal sulcus, a region strongly implicated in the support of attentionally mediated perceptual binding. The findings suggest that the encoding of disparate features of an episode into a common memory representation requires that the features be conjoined in a common perceptual representation when the episode is initially experienced.

Type: Article
Title: Episodic encoding is more than the sum of its parts: An fMRI investigation of multifeatural contextual encoding
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.neuron.2006.08.011
Keywords: MEDIAL TEMPORAL-LOBE, INFERIOR PREFRONTAL CORTEX, VISUAL FEATURE BINDING, LONG-TERM-MEMORY, OBJECT-LOCATION, BRAIN ACTIVITY, HIPPOCAMPAL CONTRIBUTIONS, DECLARATIVE MEMORY, SUBSEQUENT MEMORY, ITEM
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
URI: https://discovery.ucl.ac.uk/id/eprint/6010
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