Visual working memory capacity is limited by two systems that change across lifespan
| Autor: | Grega Repovs, Anka Slana Ozimič |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Linguistics and Language
genetic structures bilateral field advantage working memory capacity brain Experimental and Cognitive Psychology 050105 experimental psychology Language and Linguistics Maintenance system working memory visual working memory 03 medical and health sciences 0302 clinical medicine Visual memory Artificial Intelligence Orientation (mental) Visual Objects representational potential udc:159.953.2:159.91 0501 psychology and cognitive sciences Healthy aging active maintenance development computer.programming_language Hardware_MEMORYSTRUCTURES Working memory vidni spomin 05 social sciences representations visual working memory capacity cognitive psychology Neuropsychology and Physiological Psychology možgani healthy aging kognitivna psihologija Healthy ageing Psychology healthy ageing visual memory computer 030217 neurology & neurosurgery delovni spomin Cognitive psychology |
| Zdroj: | Journal of memory and language, vol. 112, no. 104090, 2020. Journal of Memory and Language |
| ISSN: | 0749-596X |
| Popis: | To better understand the sources of visual working memory limitations we explore the possibility that its capacity is limited by two systems: a representational system that enables formation of independent representations of visual objects, and an active maintenance system that enables sustained activation of the established representations in the absence of external stimuli. A total of 392 participants took part in four experiments in which they were asked to maintain orientation of items presented to the left, right or both visual hemifields. In all four experiments participants were able to maintain more items when they were distributed across both versus one visual hemifield, consistent with the proposal that bilateral display enables utilization of representational capacities of both hemispheres. Bilateral capacity, however, did not reach the combined representational potential of both hemispheres, indicating that the capacity is further limited by a second, unitary active maintenance system. Our study further suggests that both systems’ capacities change throughout the lifespan very similarly. They both increase through development, reach a peak at the same age and decrease in healthy aging. This indicates that systems beyond executive processes, which receive most attention in the literature, are contributing to the decline in working memory in healthy aging. |
| Databáze: | OpenAIRE |
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