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目的:考查左右视野中不同位置字母的辨别力。方法:采用探测刺激的方法对左右视野中字母位置的识别差异进行了研究。结果:通过SPSS15.0进行重复测量方差分析得出:①不同视野的错误率主效应显著(F=5.98,P<0.05);②探测位置的主效应非常显著(F=15.39,P<0.01);③不同视野与探测字母位置的交互作用非常显著(F=11.60,P<0.001)。结论:①位置错误多于字母错误,并且位置错误中所报告的字母更靠近中央凹。②左视野中的首字母有较差的辨别力,而右视野中的尾字母有较差的辨别力。③左视野中存在知觉系统的限制,而不是词汇识别策略中大脑左右半球的差异。④对词汇识别中大脑左半球平行加工、右半球系列加工的说法提出了质疑。
Objective: To examine the discrimination between letters in different positions in the left and right eyes. Methods: The method of detecting stimulus was used to study the differences of the letters’ positions in left and right field of view. Results: Repeated measures by SPSS15.0 ANOVA showed that: ① The main effect of different field of view was significant (F = 5.98, P <0.05); ② The main effect of detecting position was very significant (F = 15.39, P <0.01) ; ③ The interaction between different fields of view and probing letters is very significant (F = 11.60, P <0.001). CONCLUSIONS: ① There were more positional errors than alphabetical errors, and the letters reported in the wrong position were closer to the fovea. ② left field of view of the first letter has a poor discrimination, and the right field of the tail letters have a poor discrimination. (3) There is a limitation of the perceptual system in the left visual field, not the difference of left and right hemispheres in the vocabulary recognition strategy. ④ word recognition in the left hemisphere parallel processing, processing of the right hemisphere series put forward the question.