Visual object memory and memory-guided saccades rely on shared mental representations

Akdal, Gulden, Hodgson, Timothy L., Hill, Anna C. , Mannan, Sabira and Kennard, Christopher (2002) Visual object memory and memory-guided saccades rely on shared mental representations. Experimental Brain Research, 143 (4). pp. 509-514. ISSN 0014-4819

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We investigated the organisation of working memory processes by examining how a secondary memory task interferes with the accuracy of memory-guided saccades. A target was flashed at a random location, followed by a Kanji character. Subjects had to remember the location of the target and the Kanji character, and then they had to make a saccade towards the remembered target location. A second Kanji character was displayed and the subject had to decide if it was same or different. The performance of seven non-Kanji reader's were compared with six fluent Kanji readers in the task. Memorisation of Kanji characters was found to interfere with the accuracy of memory-guided saccades made by non-Kanji, but not by Kanji readers. These findings directly contradict accounts of working memory function which propose that spatial and visual object memory are functionally discrete.

Keywords:accuracy, adult, article, controlled study, female, human, human experiment, male, normal human, prefrontal cortex, priority journal, saccadic eye movement, spatial memory, stimulus response, task performance, visual memory, working memory, Adult, Chi-Square Distribution, Humans, Memory, Pattern Recognition, Visual, Saccades
Subjects:C Biological Sciences > C800 Psychology
Divisions:College of Social Science > School of Psychology
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ID Code:10545
Deposited On:09 Jul 2013 16:15

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