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Effects of enactment in episodic memory: a pilot virtual reality study with young and elderly adults.

Jebara N, Orriols E, Zaoui M, Berthoz A, Piolino P - Front Aging Neurosci (2014)

Bottom Line: Compared to passive and high navigation conditions, and regardless of age-groups, feature binding was enhanced by low navigation and IC conditions.Memory performance following high navigation was specifically linked to variability in executive functions.The present findings suggest that the decision of the itinerary is beneficial to boost EM in aging, although it does not eliminate age-related deficits.

View Article: PubMed Central - PubMed

Affiliation: UMR 7152 CNRS, Collège de France , Paris , France ; Institut de Psychologie, Université Paris Descartes , Paris , France ; INSERM U894, Centre de Psychiatrie et Neurosciences , Paris , France.

ABSTRACT
None of the previous studies on aging have tested the influence of action with respect to the degree of interaction with the environment (active or passive navigation) and the source of itinerary choice (self or externally imposed), on episodic memory (EM) encoding. The aim of this pilot study was to explore the influence of these factors on feature binding (the association between what, where, and when) in EM and on the subjective sense of remembering. Navigation in a virtual city was performed by 64 young and 64 older adults in one of four modes of exploration: (1) passive condition where participants were immersed as passengers of a virtual car [no interaction, no itinerary control (IC)], (2) IC (the subject chose the itinerary, but did not drive the car), (3) low, or (4) high navigation control (the subject just moved the car on rails or drove the car with a steering-wheel and a gas pedal on a fixed itinerary, respectively). The task was to memorize as many events encountered in the virtual environment as possible along with their factual (what), spatial (where), and temporal (when) details, and then to perform immediate and delayed memory tests. An age-related decline was evidenced for immediate and delayed feature binding. Compared to passive and high navigation conditions, and regardless of age-groups, feature binding was enhanced by low navigation and IC conditions. The subjective sense of remembering was boosted by the IC in older adults. Memory performance following high navigation was specifically linked to variability in executive functions. The present findings suggest that the decision of the itinerary is beneficial to boost EM in aging, although it does not eliminate age-related deficits. Active navigation can also enhance EM when it is not too demanding for subjects' cognitive resources.

No MeSH data available.


Related in: MedlinePlus

The four experimental conditions assessed during the virtual exploration in the VR–EM test.
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Figure 2: The four experimental conditions assessed during the virtual exploration in the VR–EM test.

Mentions: A “passive” condition (memorize without driving or choosing the itinerary) where each participant was just a passenger while the experimenter drove the car. The visual information displayed to each passive subject was the same as that of a subject who interacted with the environment. This condition served as a baseline condition compared to the three “active” experimental conditions requiring different processes (itinerary or navigation control) (see Figure 2).


Effects of enactment in episodic memory: a pilot virtual reality study with young and elderly adults.

Jebara N, Orriols E, Zaoui M, Berthoz A, Piolino P - Front Aging Neurosci (2014)

The four experimental conditions assessed during the virtual exploration in the VR–EM test.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4269133&req=5

Figure 2: The four experimental conditions assessed during the virtual exploration in the VR–EM test.
Mentions: A “passive” condition (memorize without driving or choosing the itinerary) where each participant was just a passenger while the experimenter drove the car. The visual information displayed to each passive subject was the same as that of a subject who interacted with the environment. This condition served as a baseline condition compared to the three “active” experimental conditions requiring different processes (itinerary or navigation control) (see Figure 2).

Bottom Line: Compared to passive and high navigation conditions, and regardless of age-groups, feature binding was enhanced by low navigation and IC conditions.Memory performance following high navigation was specifically linked to variability in executive functions.The present findings suggest that the decision of the itinerary is beneficial to boost EM in aging, although it does not eliminate age-related deficits.

View Article: PubMed Central - PubMed

Affiliation: UMR 7152 CNRS, Collège de France , Paris , France ; Institut de Psychologie, Université Paris Descartes , Paris , France ; INSERM U894, Centre de Psychiatrie et Neurosciences , Paris , France.

ABSTRACT
None of the previous studies on aging have tested the influence of action with respect to the degree of interaction with the environment (active or passive navigation) and the source of itinerary choice (self or externally imposed), on episodic memory (EM) encoding. The aim of this pilot study was to explore the influence of these factors on feature binding (the association between what, where, and when) in EM and on the subjective sense of remembering. Navigation in a virtual city was performed by 64 young and 64 older adults in one of four modes of exploration: (1) passive condition where participants were immersed as passengers of a virtual car [no interaction, no itinerary control (IC)], (2) IC (the subject chose the itinerary, but did not drive the car), (3) low, or (4) high navigation control (the subject just moved the car on rails or drove the car with a steering-wheel and a gas pedal on a fixed itinerary, respectively). The task was to memorize as many events encountered in the virtual environment as possible along with their factual (what), spatial (where), and temporal (when) details, and then to perform immediate and delayed memory tests. An age-related decline was evidenced for immediate and delayed feature binding. Compared to passive and high navigation conditions, and regardless of age-groups, feature binding was enhanced by low navigation and IC conditions. The subjective sense of remembering was boosted by the IC in older adults. Memory performance following high navigation was specifically linked to variability in executive functions. The present findings suggest that the decision of the itinerary is beneficial to boost EM in aging, although it does not eliminate age-related deficits. Active navigation can also enhance EM when it is not too demanding for subjects' cognitive resources.

No MeSH data available.


Related in: MedlinePlus