Reference : The effect of ageing on the neural substrates of incidental encoding leading to recol...
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
http://hdl.handle.net/2268/227459
The effect of ageing on the neural substrates of incidental encoding leading to recollection or familiarity.
English
François, Sarah mailto [Université de Liège - ULiège > > > Form. doc. sc. psycho. & éduc.]
Angel, Lucie [> >]
Salmon, Eric mailto [Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn. >]
Bastin, Christine mailto [Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn. >]
Collette, Fabienne mailto [Université de Liège - ULiège > Département de Psychologie > Neuropsychologie >]
In press
Brain and Cognition
Elsevier
Yes (verified by ORBi)
International
0278-2626
1090-2147
Atlanta
NY
[en] Aging ; Episodic memory encoding ; Familiarity ; Recollection ; fMRI
[en] It is well-known that the ageing process disrupts episodic memory. The aim of this study was to use an fMRI visual recognition task to characterize age-related changes in cerebral regions activated, during encoding, for images that would subsequently lead to a recollection-based or to a familiarity-based recognition. Results show that, for subsequent recollection, young adults activated regions related to semantic processing more extensively than older ones. On the other hand, despite putatively producing less semantic elaboration, older adults activated contralateral regions supplementary to those found in young adults(which might represent attempted compensation), as well as regions of the default-mode network. These results suggest older adults could achieve subsequent recollection through different processes, for instance an appraisal of the self-relevance of the stimuli. For subsequent familiarity, the comparisons only revealed greater activations in young adults, in the dorsal frontoparietal attention system as well as in the hippocampus, again suggesting that, even if older adults are able to produce recollection- and familiarity-based recognition, the semantic processing might still be weaker in old adults, who might nonetheless use qualitatively different strategies in order to produce such responses. Further studies are necessary in order to characterize those strategies.
Centre de Recherches du Cyclotron - CRC
Researchers
http://hdl.handle.net/2268/227459
10.1016/j.bandc.2018.07.004

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