SPATIAL SUMMATION IN THE WARMTH SENSE
SPATIAL SUMMATION IN THE WARMTH SENSE
复制标题
温暖感的空间概括
DOI：
10.1007/978-94-010-2245-3_36
复制
发表时间：
1974
期刊：
影响因子：
--
通讯作者：
L. Marks
中科院分区：
文献类型：
--
作者：
L. Marks
温暖的感觉的特点是慷慨的空间总和：感知强度的温暖的感觉增加与增加面积的刺激程度，以及与增加刺激强度。当强度低时，面积发挥其最大的作用，因为温暖取决于刺激面积和强度的乘积-即，以瓦特为单位的总功率。对低强度的综合热输入的响应使温暖感能够帮助保持恒定的体温。随着刺激强度的增加，区域对温暖的相对影响逐渐减弱，直到达到疼痛阈值，空间总和消失。在高强度下缺乏总和使温暖的感觉，以帮助保护皮肤免受潜在的损害热。空间求和的水平依赖性反映在刺激大小影响将温暖感觉与刺激强度相关联的心理物理幂函数的方式中：刺激的面积范围越大，幂函数的指数越小。
The warmth sense is characterized by generous spatial summation: perceived strength of warmth sensation increases with increasing areal extent of stimulation as well as with increasing stimulus intensity. When intensity is low, area exerts its greatest effect, in that warmth depends on the product of stimulus area and intensity - i.e., on total power in watts. Response to integrated heat input at low intensity enables the warmth sense to help maintain constant body temperature. As stimulus intensity increases, area’s relative influence on warmth diminishes until the pain threshold is reached, whereupon spatial summation vanishes. Lack of summation at high intensity enables the warmth sense to help protect the skin from potentially damaging heat. The level-dependence of spatial summation is reflected in the way stimulus size influences the psychophysical power functions that relate warmth sensation to stimulus intensity: the larger the areal extent of the stimulus, the smaller the exponent of the power function.