Effects of interhemispheric communication on two-digit arabic number processing |
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Authors: | Ratinckx Elie Nuerk Hans-Christoph van Dijck Jean-Philippe Klaus Willmes |
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Affiliation: | Department of Experimental Psychology, Ghent University, Ghent, Belgium. elie.ratinckx@ugent.be |
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Abstract: | We investigated interhemispheric communication and hemispheric style differences (analytic vs. holistic) in two-digit Arabic number comparison by employing the divided visual field paradigm. Interhemispheric communication modulated two-digit number comparison in a very specific way. While no advantage of interhemispheric communication was found with unit-decade compatible trials (e.g., 52 and 67, the decade comparison and unit comparison of the two numbers lead to the same response; see Nuerk et al., 2001), a significant advantage of interhemispheric interactions emerged in the attentionally more demanding incompatible trials (e.g., 47 and 62, decade and unit comparisons do not lead to the same response, because 4 < 6 but 7 > 2), thereby enhancing the efficiency of selective attention (c.f., Banich, 1998). Additionally, some results indicated a more analytical processing style in the left hemisphere and a relatively more holistic processing style in the right hemisphere. |
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Keywords: | two-digit Arabic number number comparison interhemispheric communication visual half field |
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