Interhemispheric differences in same versus different judgments upon presentation of complex visual stimuli.

An experiment is reported which was aimed at investigating interhemispheric differences upon tachistoscopic presentation of Same vs Different stimuli, i.e. pairs of 16-side Vanderplas and Garvin figures selected for their complexity, unfamiliarity and lack of verbalization. The right hemisphere was found to be faster and more accurate in Same judgements and the left hemisphere in Different judgements. These findings seem to further confirm the assumption that the right hemisphere would mostly use a holistic strategy and the left hemisphere an analytic strategy.