Article (Scientific journals)
Differential contributions of default and dorsal attention networks to remembering thoughts and external stimuli from real-life events
Stawarczyk, David; Jeunehomme, Olivier; D'Argembeau, Arnaud
2018In Cerebral Cortex, 11, p. 4023-4035
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Keywords :
Episodic memory; Functional neuroimaging; Scene construction; Self-generated thought; Visuo-spatial processing
Abstract :
[en] Episodic memories are typically composed of perceptual information derived from the external environment and representations of internal states (e.g., one’s thoughts during prior episodes). To date, however, research has mostly focused on the remembrance of external stimuli, such that little is known about how internal mentation is represented within episodic memory. In the present fMRI study, we examined the neural correlates of these two components of episodic memories using a novel method of cuing memories from photographs taken during real-life events. We found that, compared to corresponding semantic memory tasks, memories for internal thoughts and external elements were associated with activity in brain areas supporting episodic recollection. Most importantly, however, the two kinds of memories also showed differential activation in large-scale brain networks: the remembrance of external elements was associated with greater activity in the dorsal attention network, whereas memories of internal thoughts mainly recruited default network areas. These findings shed new light on the representation of internal and external aspects of prior experience within episodic memory. The default network may contribute to the reinstatement of thoughts experienced during past events, whereas the dorsal attention network may support the allocation of attention to visuo-spatial features within episodic memory representations.
Research center :
Neuroscience of Cognition Research Unit
Disciplines :
Theoretical & cognitive psychology
Neurosciences & behavior
Author, co-author :
Stawarczyk, David ;  Université de Liège - ULiège > Département de Psychologie > Psychopathologie cognitive
Jeunehomme, Olivier  ;  Université de Liège - ULiège > Département de Psychologie > Psychopathologie cognitive
D'Argembeau, Arnaud  ;  Université de Liège - ULiège > Département de Psychologie > Psychopathologie cognitive
Language :
English
Title :
Differential contributions of default and dorsal attention networks to remembering thoughts and external stimuli from real-life events
Publication date :
2018
Journal title :
Cerebral Cortex
ISSN :
1047-3211
eISSN :
1460-2199
Publisher :
Oxford University Press, Cary, United States - North Carolina
Volume :
11
Pages :
4023-4035
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
ULg FSR - Université de Liège. Fonds spéciaux pour la recherche [BE]
Funding text :
University of Liège (Fonds spéciaux – Crédit classique n° 5173)
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since 19 October 2017

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