Spatial interaction effects in letter processing |
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Authors: | Bo Strangert Lauritz Brännström |
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Institution: | 1. Communication Research Unit, University of Ume?, S-901 87, Ume?, Sweden
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Abstract: | The hypothesis of independent processing channels was tested in a letter-recognition task. Letter space and retinal position were varied for both unilateral and bilateral presentations of two-letter configurations. The response latencies indicated contour interference effects for small letter spaces as well as a different type of processing delay which increased rapidly with increased letter distance from the fixation point. The latter effect was assumed to represent an interaction between the feature extraction processes of the adjacent letters. Since the processing capacity decreases as a function of the distance from the fovea, the reaction times were correspondingly lengthened. |
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