Visual working memory capacity is limited by two systems that change across lifespan

Slana Ozimič, Anka (avtor), Repovš, Grega (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: working memory, visual memory, cognitive psychology, brain, active maintenance, bilateral field advantage, healthy aging, representational potential, visual working memory capacity
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FF - Filozofska fakulteta ; MF - Medicinska fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 20 str.
• Številčenje: Vol. 112, art. 104090
• PID: 20.500.12556/RUL-127095
• UDK: 159.953.2:159.91
• ISSN pri članku: 0749-596X
• DOI: 10.1016/j.jml.2020.104090
• COBISS.SI-ID: 71052130
• Datum objave v RUL: 17.05.2021

Gradivo je del revije

• Naslov: Journal of memory and language
• Skrajšan naslov: J. mem. lang.
• Založnik: Elsevier
• ISSN: 0749-596X
• COBISS.SI-ID: 25764096

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 24.01.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: delovni spomin, vidni spomin, kognitivna psihologija, možgani