20.500.12556/RUL-127095 Visual working memory capacity is limited by two systems that change across lifespan 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. working memory visual memory cognitive psychology brain active maintenance bilateral field advantage healthy aging representational potential visual working memory capacity delovni spomin vidni spomin kognitivna psihologija možgani true false true Angleški jezik Slovenski jezik Članek v reviji 2021-05-17 13:40:54 2021-05-17 13:41:01 2022-09-06 03:49:44 0000-00-00 00:00:00 2020 0 0 20 str. art. 104090 Vol. 112 jun. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 159.953.2:159.91 0749-596X 10.1016/j.jml.2020.104090 71052130 RAZ_Slana_Ozimic_Anka_2020.pdf RAZ_Slana_Ozimic_Anka_2020.pdf 1 41128617FB762A5EE8AC4588A94D599D 4a705d0729b42a6e1243ab4660a462260b4902973bf711f90734bfcd8ea53a2e f8f28479-b707-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=143316 https://www.sciencedirect.com/science/article/pii/S0749596X20300048 0 b65c3cad-b704-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=143311 Filozofska fakulteta Medicinska fakulteta 0 0 0