Wirsén A, af Klinteberg B, Levander S, Schalling D
Department of Psychiatry and Psychology, Karolinska Institute, Stockholm, Sweden.
Brain Cogn. 1990 Mar;12(2):229-39. doi: 10.1016/0278-2626(90)90017-i.
Two forms of a Chimeric Faces Free-Vision Task used to estimate cerebral asymmetry for perceiving facial expression were given to young male subjects, n = 60 in a first session and n = 40 in a retest session. Test-retest and split-half reliabilities were high. As expected from assumptions of right-hemisphere specialization for processing expression, faces with left-sided smiles were more frequently judged as looking happier than those with right-sided smiles in both forms. However, there were individual differences in direction and extent of bias, which were systematically related to reaction time, right visual field-biased subjects being slower. Differences in lateral bias as well as in reaction time are assumed to reflect individual patterns of hemispheric activation, whereas the average left bias in the present male group may reflect right-hemisphere specialization for processing of facial expression.
两种用于评估感知面部表情时大脑不对称性的嵌合面孔自由视觉任务被给予年轻男性受试者，第一次测试有60名受试者，复测时有40名受试者。重测信度和分半信度都很高。正如从右半球专门处理表情的假设所预期的那样，在两种形式中，左侧微笑的面孔比右侧微笑的面孔更常被判断为看起来更开心。然而，偏差的方向和程度存在个体差异，这些差异与反应时间系统相关，右侧视野偏向的受试者反应较慢。侧向偏差以及反应时间的差异被认为反映了半球激活的个体模式，而当前男性组中的平均左侧偏差可能反映了右半球在处理面部表情方面的专门化。
