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   1996, Vol. 28 Issue (04) : 419-424     DOI:
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AN ANALYTICAL EXPRESSION OF WEBER RATIO
Chen Wenxi;(Shanxi Mining Institute,Taiyua,030024)
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Abstract  The present paper begins with constructing a mathematical model for cortex effect E caused by stimulus code along the afferent channel.The model E=Blog(1+kI),k=I ̄(-b)/a in terms of stimulus intensity I is based on neurophysiological experiments and the practicality of receptor functions acquired in the long run of evolution.Accordingly, the criterion of difference limen for moderate stimuli has been shown to be △E=constant, which, being generaized to weak stimuli,leads to a resonable extension of Weber's law:△I/(I+aI ̄b)=constant N,which is valid to weak and strong stimuli. Thus the old problem over a hundred years ago concerning extend of the validity of Weber’s law to include weak stimuli seems to be more or less settled.
Keywords Weber ratio      difference limen      mathematical model     
Issue Date: 25 December 1996
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Chen Wenxi,(Shanxi Mining Institute,Taiyua,030024). AN ANALYTICAL EXPRESSION OF WEBER RATIO[J]. ,1996, 28(04): 419-424.
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http://journal.psych.ac.cn/xlxb/EN/     OR     http://journal.psych.ac.cn/xlxb/EN/Y1996/V28/I04/419
[1] Zhang Minqiang(Zhongshan University, Guangzhou 510275)Liu Xiaoyu(South China Normal University, Guangzhou 510631). A STUDY ON THE APPLYING OF ITEM RESPONSE MODELS[J]. , 1998, 30(04): 436-441.
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