Visual Short-Term Memory Capacity for Simple and Complex Objects

Autor/inn/en	Luria, Roy; Sessa, Paola; Gotler, Alex; Jolicoeur, Pierre; Dell'Acqua, Roberto
Titel	Visual Short-Term Memory Capacity for Simple and Complex Objects
Quelle	In: Journal of Cognitive Neuroscience, 22 (2010) 3, S.496-512 (17 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0898-929X
DOI	10.1162/jocn.2009.21214
Schlagwörter	Short Term Memory; Research Methodology; Brain; Comparative Analysis; Stimuli; Task Analysis; Cognitive Processes + Suchen Sie Ihr Suchwort? Kurzzeitgedächtnis; Research method; Forschungsmethode; Gehirn; Anreizsystem; Aufgabenanalyse; Cognitive process; Kognitiver Prozess
Abstract	Does the capacity of visual short-term memory (VSTM) depend on the complexity of the objects represented in memory? Although some previous findings indicated lower capacity for more complex stimuli, other results suggest that complexity effects arise during retrieval (due to errors in the comparison process with what is in memory) that is not related to storage limitations of VSTM, per se. We used ERPs to track neuronal activity specifically related to retention in VSTM by measuring the sustained posterior contralateral negativity during a change detection task (which required detecting if an item was changed between a memory and a test array). The sustained posterior contralateral negativity, during the retention interval, was larger for complex objects than for simple objects, suggesting that neurons mediating VSTM needed to work harder to maintain more complex objects. This, in turn, is consistent with the view that VSTM capacity depends on complexity. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10