Tuning curves for approximate numerosity in the human intraparietal sulcus
Tuning curves for approximate numerosity in the human intraparietal sulcus
复制标题
DOI：
10.1016/j.neuron.2004.10.014
复制
发表时间：
2004-10-28
期刊：
影响因子：
16.2
通讯作者：
Dehaene, S
中科院分区：
文献类型：
--
作者：
Piazza, M;Izard, V;Dehaene, S
数字，就像颜色或运动一样，是环境的基本属性。最近，在动物身上观察到了与数字相关的单个神经元。我们使用心理物理学和神经成像来检查人类是否存在类似的神经编码方案。当参与者看到一组可变数字的项目时，双侧顶内沟选择性地对数字变化做出反应。从功能上说，这种反应的形状表明，人类和其他动物一样，在压缩的内部尺度上编码近似数字。从解剖学上讲，人类顶叶内编码数字的部位与猕猴中观察到的一致。因此，我们的研究结果表明人类初等算术的进化基础。
Number, like color or movement, is a basic property of the environment. Recently, single neurons tuned to number have been observed in animals. We used both psychophysics and neuroimaging to examine whether a similar neural coding scheme is present in humans. When participants viewed sets of items with a variable number, the bilateral intraparietal sulci responded selectively to number change. Functionally, the shape of this response indicates that humans, like other animal species, encode approximate number on a compressed internal scale. Anatomically, the intraparietal site coding for number in humans is compatible with that observed in macaque monkeys. Our results therefore suggest an evolutionary basis for human elementary arithmetic.