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Does selective attention differentially modulate within-versus between-hemisphere interference?

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2006, v.18 no.3, pp.263-280


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Abstract

We ran two experiments to determine; 1) if interference due to competing responses (such as occurs in the Stroop task) can be reduced by between-hemisphere separation of target and distractor, and 2) if between-hemisphere separation of target and distractor was effective in reducing interference when the peripheral cue drove spatial attention to the distractor. In Experiment 1 where the peripheral cue was not provided, interference in the between- and within-hemisphere condition did not differ from each other. In Experiments 2, a peripheral cue of high validity was presented sometimes to the target location and sometimes to the distractor location. The results of Experiment 2 showed that between-hemisphere separation of target and distractor could effectively protect target processing from a distractor that mistakenly drew attention. The present results imply a possible role of an interhemispheric shielding mechanism to prevent wrong responses to the mistakenly selected stimulus at the attended location.

keywords
hemispheric independence, bihemispheric advantage, response interference, selective attention, peripheral cue, 반구 독립성, 간섭효과, 선택적 주의, 주변단서, 양반구 처리의 이득

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The Korean Journal of Cognitive and Biological Psychology