ISSN 0439-755X
CN 11-1911/B
主办:中国心理学会
   中国科学院心理研究所
出版:科学出版社

心理学报 ›› 1986, Vol. 18 ›› Issue (02): 93-99.

• • 上一篇    下一篇

汉字认知过程中大脑两半球机能不对称性的实验研究

郭念锋;尹文刚   

  1. 中国科学院心理研究所 ,中国科学院心理研究所
  • 出版日期:1986-06-25 发布日期:1986-06-25
  • 通讯作者: 郭念锋

AN EXPERIMENT IN THE FUNCTIONAL ASYMMETRY OF THE TWO CEREBRAL HEMISPHERS IN RECOGNIZING CHINESE CHARACTERS

Guo Nianfeng;Yin Wengang Institute of Psychology, Academia Sinica   

  • Online:1986-06-25 Published:1986-06-25

摘要: 以往我们的实验表明,大脑两半球在认知单个汉字时,没有表现出任何认知优势,但这并没有使我们得出最后的结论。 该项实验中,我们选出八个汉字并把它们放在四种噪音背景上,它们的信噪比分别为∞,6.66,4,和2.85。被试为20名大学生,男10名,女10名,年龄在19至20岁。刺激呈现时间为60ms。 实验结果如下: (1)无噪音干扰情况下,左、右视野在认知上无差别。信噪比为6.6时,差异不明显。 (2) 只是信噪比为4时,认知难度达到相当水平以后,右视野的优势才变得明显起来。 (3)无论在哪种难度水平上,左视野的反应时都比右视野快,但反应的准确度,右视野却占有优势。

关键词: NULL

Abstract: Our past experiments showed that in correctly recognizing isolatedChinese characters, neither of the two hemispheres played a dominantrole, but we were not ready to draw any final conclusions. In the present study, we selected eight Chinese characters and setthem against four different background noise. The signal to noise ratioswere ∞, 6.66, 4 and 2.85 respectively. The subjects of our experimentwere 20 college students, 10 males and 10 females, whose ages ranged from19 to 20. The time of appearance for the stimuli was 60 msec. The results of the experiment were as follows: 1) Without noise interference, there was no marked differencebetween the left and right visual fields, nor was there any differenceswhen the signal-to-noise ratio was 6.66. 2) It was only when the signal-to-noise ratio was 4 and thedifficulty of recognition reached a fairly high level that the dominanceof the right visual field became obvious. 3) Whatever the degree of difficulty, reaction time of the leftvisual field was shorter than that of the right, but in the correctnessof recognition of the right visual field displayed some dominance.

Key words: NULL