The simple detection of colored stimuli in the right, center, and left visual fields was examined. 10 male subjects were used in a reaction time paradigm with color (red, green, or blue), field, and hand as independent variables. A significantly faster RT to stimuli presented in the left visual field was observed, and further the left visual field-left hand combination was the fastest of all the combinations of visual-field × hand. A significant interaction of color × field suggested that red may be processed on a higher order level even in a simple detection task.
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