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

Anka Slana (Avtor), Grega Repovš (Avtor)

Povzetek

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.

Ključne besede

delovni spomin;vidni spomin;kognitivna psihologija;možgani;working memory;visual memory;cognitive psychology;brain;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FF - Filozofska fakulteta
UDK:	159.953.2:159.91
COBISS:	71052130
ISSN:	0749-596X
Št. ogledov:	395
Št. prenosov:	145
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	delovni spomin;vidni spomin;kognitivna psihologija;možgani;
Vrsta dela (COBISS):	Članek v reviji
Strani:	str. 1-20
Letnik:	ǂVol. ǂ112
Zvezek:	ǂart. ǂ104090
Čas izdaje:	jun. 2020
DOI:	10.1016/j.jml.2020.104090
ID:	12907171