复杂图形表象产生的认知加工机制  

The Cognitive Generation Mechanism of Complex Picture Visual Image

作　　者：宋晓蕾[1] 游旭群[1] 

机构地区：[1]陕西师范大学心理学院,西安710062

出　　处：《心理科学》2010年第5期1030-1034,共5页Journal of Psychological Science

基　　金：国家社会科学基金项目(BBA070016);国家自然科学基金委员会与中国民航局联合资助项目(6107904);教育部青年专项课题(EBA100360)资助

摘　　要：采用Kosslyn双任务分离的研究范式,通过两个实验考察了复杂图形表象产生的认知加工机制。实验1提出了当要求被试在产生动物的部分表象时,大脑左半球明显反应更快;而当要求被试产生客体整体特征的表象时,并没有出现大脑半球的优势效应。实验2采用控制任务进一步证实大脑两半球不同的优势效应,研究发现当同样的任务以知觉形式完成时,没有大脑半球的优势效应。实验结果表明,在复杂图形表象产生的过程中,当产生部分表象时,大脑左半球有显著优势;而当产生整体表象时,两半球起同样作用。此结果进一步拓展了Kosslyn提出的大脑半球专门化假说。With the two-task dissociated paradigm that Kosslyn used,two behavior experiments were conducted to reveal the hemispheric lateralization of structures generating the details and the holistic properties of mental images.In the first experiment the left hemisphere was faster in discriminating at an imagery level whether animals had short or long tails.No hemispheric dominance was found when the imagery task required the discrimination of the holistic features of objects and a decision of whether their heights were greater than their widths,or vice versa.In the second experiment,which was a control task,no hemispheric dominance was found when the same tasks had to be performed perceptually.The present results suggest that multipart mental images are generated by the left hemisphere and skeletal images by both hemispheres.

关 键 词：表象产生 整体 部分 大脑半球 

分 类 号：B842[哲学宗教—基础心理学]