摘要：This article discusses the connection of hemispheric control over audioverbal perceptionprocesses and such individual features as “leading hand” (right-handedness and lefthandedness).We present a literature review and description of our research to provideevidence of the complexity and ambiguity of this connection. The method of dichoticlistening was used for diagnosing audioverbal perception lateralization. This methodallowsestimation of the right-ear coefficient (REC), the efficiency coefficient (EC), andthe effectiveness ratio (ER) of different aspects of audioverbal perception. Our researchinvolved 47 persons with a leading right hand (mean age, 29.04±9.97 years) and 32 personswith a leading left hand (mean age, 29.41±10.34 years). Different hypotheses aboutthe mechanisms of hemispheric control over audioverbal and motor processes were assessed.The research showed that both the left- and right-handers’ audioverbal perceptioncharacteristicsdepended mainly on right-hemisphere activity. The most dynamic andsensitive index of the functioning of the two hemispheres during dichotic listening wasthe efficiency coefficient of stimuli reproduction through the left ear (EC of the left ear).It turns out that this index depends on the coincidence/noncoincidence of the leadinghemispheres in speech and motor processes. The highest efficiency of audioverbalperceptionrevealed itself in the left-handers with a leading left ear (the hemispheric-controlcoincidence), and the lowest efficiency was in the left-handers with a leading right ear(the hemispheric-control divergence). The right-handers were characterized by less variationin values, although the influence of the coincidence/noncoincidence of the leadinghemispheres in speech and motor processes also revealed itself as a tendency. Thisconsistent pattern points out the necessity for further research on asymmetries of thedifferent modalities that takes into account their probable interaction. The results of our study comport with scientific data showing genotypic left-handers with subzero right-ear coefficient (REC) values to be more efficient than left-handed persons who display high REC values.
关键词：left-handers; right-handers; dichotic listening; right-ear coefficient (REC); efficiency;coefficient (EC); leading hemisphere in the process of audioverbal perception
