Concurrent effects of attention and colors on the cerebral hemisphere processing speed of Arabic words
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Abstract
It has been debated whether attention or colors may modulate cerebral hemisphere processing speed of visual modalities. Electrophysiological studies have demonstrated that either attention or colors modulates the early stages of brain neural activity when these stimuli were processed. However, the concurrent effects of attention and color on the speed of Arabic word processing in both cerebral hemispheres have not been investigated. The current study investigated the combined effects of attention and colors in the right and left cerebral hemisphere. In two experiments, word stimuli were presented in different length, and colors on the right and left hemifields randomly. Participants were instructed to detect specific word color using index fingers. Results reported that the reaction times “RTs” were increased, when letter words decreased, and longer RTs in the right than left hemifield for white and green colored words. An opposite pattern was reported for red and blue colored words, in that RTs were longer in the left than right hemifield. These findings suggested that colors may modulate cerebral hemisphere processing speed of these visual modalities. Additionally, attention may change the way that the cerebral cortex is responding to visual-colored words with different length. In conclusion, these findings suggested that combined effects of attention and colors modulate the cerebral hemisphere processing speed.
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