The asymmetry and temporal dynamics of incidental letter-location bindings in working memory.

Elsley, J. V. and Parmentier, F.B.R., 2015. The asymmetry and temporal dynamics of incidental letter-location bindings in working memory. Quarterly Journal of Experimental Psychology, 68 (3), 433 - 441 .

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DOI: 10.1080/17470218.2014.982137

Abstract

Verbal-spatial bindings are integral to routine cognitive operations (e.g., reading), yet the processes supporting them in working memory are little understood. Campo and colleagues [Campo, P., Poch, C., Parmentier, F. B. R., Moratti, S., Elsley, J. V., Castellanos, N., … Maestú, F. (2010). Oscillatory activity in prefrontal and posterior regions during implicit letter-location binding. Neuroimage, 49, 2807-2815] recently reported data suggesting obligatory letter-location binding when participants were directed to remember the letters in a display (of letters in locations), but no evidence for binding when instructed to remember the filled locations. The present study contrasted two explanations for this binding asymmetry. First, it may result from an obligatory dependence on "where" during the representation of "what" information, while "where" information may be held independently of its contents (the strong asymmetry hypothesis). Second, it may constitute a snapshot of a dynamic feature inhibition process that had partially completed by test: the asymmetrical inhibition hypothesis. Using Campo and colleagues' task with a variable retention interval between display and test, we presented four consonants in distinct locations and contrasted performance between "remember letters" and "remember locations" instructions. Our data supported the strong asymmetry hypothesis through demonstrating binding in the verbal task, but not in the spatial task. Critically, when present, verbal-spatial bindings were remarkably stable, enduring for at least 15 seconds.

Item Type:Article
ISSN:1747-0218
Uncontrolled Keywords:Binding ; Episodic buffer ; Working memory
Subjects:UNSPECIFIED
Group:Faculty of Science and Technology
ID Code:22338
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:11 Aug 2015 09:35
Last Modified:11 Aug 2015 09:35

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