Forgetting across a hierarchy of episodic representations
(2021) In Current Opinion in Neurobiology 67. p.50-57- Abstract
Rich episodic experiences are represented in a hierarchical manner across a diverse network of brain regions, and as such, the way in which episodes are forgotten is likely to be similarly diverse. Using novel experimental approaches and statistical modelling, recent research has suggested that item-based representations, such as ones related to the colour and shape of an object, fragment over time, whereas higher-order event-based representations may be forgotten in a more ‘holistic’ uniform manner. We propose a framework that reconciles these findings, where complex episodes are represented in a hierarchical manner, from individual items, to small-scale events, to large-scale episodic narratives. Each level in the hierarchy is... (More)
Rich episodic experiences are represented in a hierarchical manner across a diverse network of brain regions, and as such, the way in which episodes are forgotten is likely to be similarly diverse. Using novel experimental approaches and statistical modelling, recent research has suggested that item-based representations, such as ones related to the colour and shape of an object, fragment over time, whereas higher-order event-based representations may be forgotten in a more ‘holistic’ uniform manner. We propose a framework that reconciles these findings, where complex episodes are represented in a hierarchical manner, from individual items, to small-scale events, to large-scale episodic narratives. Each level in the hierarchy is represented in distinct brain regions, from the perirhinal cortex, to posterior hippocampus, to anterior hippocampus and ventromedial prefrontal cortex. Critically, forgetting may be underpinned by different mechanisms at each level in the hierarchy, leading to different patterns of behaviour.
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- author
- Andermane, Nora ; Joensen, Bárður H. LU and Horner, Aidan J.
- publishing date
- 2021-04
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Current Opinion in Neurobiology
- volume
- 67
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- pmid:32882596
- scopus:85089947361
- ISSN
- 0959-4388
- DOI
- 10.1016/j.conb.2020.08.004
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2020 The Authors
- id
- 8e781c6c-968f-437a-96d4-8bba7a2f0a06
- date added to LUP
- 2024-03-18 12:04:22
- date last changed
- 2024-07-08 16:42:51
@article{8e781c6c-968f-437a-96d4-8bba7a2f0a06,
abstract = {{<p>Rich episodic experiences are represented in a hierarchical manner across a diverse network of brain regions, and as such, the way in which episodes are forgotten is likely to be similarly diverse. Using novel experimental approaches and statistical modelling, recent research has suggested that item-based representations, such as ones related to the colour and shape of an object, fragment over time, whereas higher-order event-based representations may be forgotten in a more ‘holistic’ uniform manner. We propose a framework that reconciles these findings, where complex episodes are represented in a hierarchical manner, from individual items, to small-scale events, to large-scale episodic narratives. Each level in the hierarchy is represented in distinct brain regions, from the perirhinal cortex, to posterior hippocampus, to anterior hippocampus and ventromedial prefrontal cortex. Critically, forgetting may be underpinned by different mechanisms at each level in the hierarchy, leading to different patterns of behaviour.</p>}},
author = {{Andermane, Nora and Joensen, Bárður H. and Horner, Aidan J.}},
issn = {{0959-4388}},
language = {{eng}},
pages = {{50--57}},
publisher = {{Elsevier}},
series = {{Current Opinion in Neurobiology}},
title = {{Forgetting across a hierarchy of episodic representations}},
url = {{http://dx.doi.org/10.1016/j.conb.2020.08.004}},
doi = {{10.1016/j.conb.2020.08.004}},
volume = {{67}},
year = {{2021}},
}