The connection between functional asymmetry of the brain and lateralization of individual space is studied. The new method based on a variant of Stroop effect of examining interference effects in visual reception is presented. The use of unconcor-dance between retinal and individual space coordinates enables the researcher to discern two different mechanisms of functional asymmetry. The machinery of solving left-hemispheric problems is connected to lateralization of receptor structures. The machinery of solving right-hemispheric problems is determined by the differences in representation of left and right halves of individual space.