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Visual Dominance of Touch and the Somatosensory Homunculus: Does the Amount of Cortical Space Matter?
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by E. K. Reese - California State University, Stanislaus
The present study was an experimental investigation of whether visual dominance may be moderated by cortical representation on the somatosensory cortex. Forty-five university students were tested using the Arachnimech SR-1 prototype, which delivered congruent and incongruent visual and tactile stimuli to the participants’ index and little fingers (as the index finger has significantly greater cortical representation than the little finger). Response times and accuracy were measured. Response times were significantly shorter for the index finger than the little finger in both congruent and incongruent situations. Responses were significantly more accurate overall for congruent stimuli than for incongruent stimuli, but there was no significant difference in accuracy between the index finger and little finger.
Faculty Supervisor: Dawn Strongin , California State University, Stanislaus