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Lateralized processing of false memories and pseudoneglect in aging.
Rémy Schmitz1, Hedwige Dehon, Philippe Peigneux
1UR2NF [Unité de Recherches en Neuropsychologie et Neuroimagerie Fonctionnelle], Université Libre de Bruxelles, Campus du Solbosch CP191, Brussels, Belgium.
Summary
Older adults exhibit more false memories than young adults, with age reducing the brain hemisphere
Area of Science:
- Cognitive Neuroscience
- Psychology
- Neuroscience
Background:
- Aging is linked to increased false memories and reduced memory retrieval.
- Cerebral hemispheres show differing sensitivities to memory processes in young adults.
- Reduced cerebral asymmetries with age may impact false memory generation.
Purpose of the Study:
- To investigate how aging affects behavioral asymmetries in false memory generation.
- To compare false memory production in older adults (OA) and young adults (YA) using a lateralized memory task.
- To explore the relationship between attentional bias and memory processes in different age groups.
Main Methods:
- A lateralized Deese-Roediger-McDermott (DRM) paradigm was used with word lists.
- Participants (OA and YA) encoded word lists and later identified targets, lures, and distractors presented in visual fields.
- Memory judgments included "Remember" (episodic recollection) and "Know" (familiarity) responses.
Main Results:
- Older adults (OA) showed higher overall false memories than young adults (YA).
- Vivid false recollections were linked to right hemisphere (RH) stimulation in YA, but not OA.
- Correlations between familiarity, attentional bias, and memory were found in YA, but not OA.
Conclusions:
- Aging diminishes the behavioral asymmetries in false memory previously observed in young adults.
- Attentional resource allocation to visuospatial and memory processes may be altered with aging.
- A memory "pseudoneglect" phenomenon, influenced by hemispheric interactions, appears to change with age.
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