id:"swepub:oai:lup.lub.lu.se:97a8207a-c1b1-43aa-b20c-a819c5471355"
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- Grande, XeniaOtto von Guericke University Magdeburg,German Center for Neurodegenerative Diseases (DZNE), Bonn (author)
Holistic Recollection via Pattern Completion Involves Hippocampal Subfield CA3
- Article/chapterEnglish2019
Publisher, publication year, extent ...
- 2019
- 12 s.
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- LIBRIS-ID:oai:lup.lub.lu.se:97a8207a-c1b1-43aa-b20c-a819c5471355
- https://lup.lub.lu.se/record/97a8207a-c1b1-43aa-b20c-a819c5471355URI
- https://doi.org/10.1523/JNEUROSCI.0722-19.2019DOI
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- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- Episodic memories typically comprise multiple elements. A defining characteristic of episodic retrieval is holistic recollection, i.e., comprehensive recall of the elements a memorized event encompasses. A recent study implicated activity in the human hippocampus with holistic recollection of multi-element events based on cues (Horner et al., 2015). Here, we obtained ultra-high resolution functional neuroimaging data at 7 tesla in 30 younger adults (12 female) using the same paradigm. In accordance with anatomically inspired computational models and animal research, we found that metabolic activity in hippocampal subfield CA3 (but less pronounced in dentate gyrus) correlated with this form of mnemonic pattern completion across participants. Our study provides the first evidence in humans for a strong involvement of hippocampal subfield CA3 in holistic recollection via pattern completion.SIGNIFICANCE STATEMENT Memories of daily events usually involve multiple elements, although a single element can be sufficient to prompt recollection of the whole event. Such holistic recollection is thought to require reactivation of brain activity representing the full event from one event element ("pattern completion"). Computational and animal models suggest that mnemonic pattern completion is accomplished in a specific subregion of the hippocampus called CA3, but empirical evidence in humans was lacking. Here, we leverage the ultra-high resolution of 7 tesla neuroimaging to provide first evidence for a strong involvement of the human CA3 in holistic recollection of multi-element events via pattern completion.
Subject headings and genre
- MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Neurovetenskaper hsv//swe
- MEDICAL AND HEALTH SCIENCES Basic Medicine Neurosciences hsv//eng
- 7 T fMRI
- hippocampal subfields
- medial temporal lobe
- memory
- pattern completion
- recollection
Added entries (persons, corporate bodies, meetings, titles ...)
- Berron, DavidLund University,Lunds universitet,Klinisk minnesforskning,Forskargrupper vid Lunds universitet,Clinical Memory Research,Lund University Research Groups,German Center for Neurodegenerative Diseases (DZNE), Bonn,Otto von Guericke University Magdeburg(Swepub:lu)da1401be (author)
- Horner, Aidan J.University of York (author)
- Bisby, James A.University College London (author)
- Düzel, EmrahUniversity College London,German Center for Neurodegenerative Diseases (DZNE), Bonn,Otto von Guericke University Magdeburg (author)
- Burgess, NeilUniversity College London (author)
- Otto von Guericke University MagdeburgGerman Center for Neurodegenerative Diseases (DZNE), Bonn (creator_code:org_t)
Related titles
- In:The Journal of Neuroscience : the official journal of the Society for Neuroscience39:41, s. 8100-81111529-2401
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- Grande, Xenia
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