DEVELOPMENT OF ELEMENTARY NUMERICAL ABILITIES - A NEURONAL MODEL

被引:520
作者
DEHAENE, S
CHANGEUX, JP
机构
[1] INSERM, F-75005 PARIS, FRANCE
[2] CNRS, F-75005 PARIS, FRANCE
[3] INST PASTEUR, F-75724 PARIS 15, FRANCE
关键词
D O I
10.1162/jocn.1993.5.4.390
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Despite their lack of language, human infants and several animal species possess some elementary abilities for numerical processing. These include the ability to recognize that a given numerosity is being presented visually or auditorily, and, at a later stage of development, the ability to compare two numerosities and to decide which is larger. We propose a model for the development of these abilities in a formal neuronal network. Initially, the model is equipped only with unordered numerosity detectors. it can therefore detect the numerosity of an input set and can be conditioned to react accordingly. In a later stage, the addition of a short-term memory network is shown to be sufficient for number comparison abilities to develop. Our computer simulations account for several phenomena in the numerical domain, including the distance effect and Fechner's law for numbers. They also demonstrate that infants' numerosity detection abilities may be explained without assuming that infants can count. The neurobiological bases of the critical components of the model are discussed.
引用
收藏
页码:390 / 407
页数:18
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