Babkoff H, Faust M
Department of Psychology, Bar-Ilan University, Ramat-Gan, Israel.
Neuropsychologia. 1988;26(5):711-25. doi: 10.1016/0028-3932(88)90006-1.
Visual hemifield, stimulus duration and angle of eccentricity were manipulated using a lexical decision paradigm (discrimination of words from non-words). Lexical decision was measured by several dependent variables: reaction time, (RT); accuracy, d'; and beta. The results support the generalization of RVF superiority in a lexical decision task for parafoveal stimulation for three dependent variables, RT, accuracy and d'. No significant effect of any stimulus manipulation was found for beta. When RT is plotted as a function of accuracy, the data separate into two groups (one for words, one for non-words) each best described by a linear equation with negative slope. The implication of this analysis is discussed, and the hypothesis offered that the same basic process discriminates words from non-words in a lexical decision task, regardless of visual field, parafoveal angle of eccentricity or stimulus duration. Visual field is processed no differently from the other stimulus manipulations.
使用词汇判断范式（区分单词和非单词）来操纵视觉半视野、刺激持续时间和偏心率角度。词汇判断通过几个因变量来衡量：反应时间（RT）、准确率（d'）和β值。结果支持了右视野优势在词汇判断任务中对中央凹旁刺激的三个因变量（RT、准确率和d'）的普遍适用性。对于β值，未发现任何刺激操纵有显著影响。当将RT绘制为准确率的函数时，数据分为两组（一组为单词，一组为非单词），每组都能用具有负斜率的线性方程进行最佳描述。讨论了该分析的含义，并提出假设：在词汇判断任务中，无论视野、中央凹旁偏心率角度或刺激持续时间如何，相同的基本过程都能区分单词和非单词。对视野的处理与其他刺激操纵没有差异。
