Temperature sensitivity of the body surface over the life span.
Temperature sensitivity of the body surface over the life span.
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DOI：
10.1080/08990229870925
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发表时间：
1998
影响因子：
0.9
通讯作者：
J. C. Stevens;Kenneth K. Choo
中科院分区：
文献类型：
--
作者：
J. C. Stevens;Kenneth K. Choo
在60名年龄在18至88岁之间的成年人的身体的13个区域中测量了变暖和变冷的检测阈值。从这些阈值构建的地图的热敏感性同源的身体地图的空间敏锐度（在旧的文献两点歧视），长期以来已知的体感科学家。年轻人、中年人和老年人的冷热敏感度图显示了不同身体部位的敏感度如何随年龄变化。三个特点出现，不论年龄：（1）敏感性变化约100倍的身体表面。面部，尤其是嘴部附近，是非常敏感的，四肢，相比之下，差，其他区域，中间。(2)身体的各个部位对寒冷比温暖更敏感。(3)一个地区探测寒冷的能力越强，它探测温暖的能力就越强。随着年龄的增长，热敏感性下降。最大的变化发生在四肢，特别是脚，那里的阈值往往变得太大而无法测量。随着年龄的增长，中央区域的敏感性下降得更慢，甚至（如嘴唇）不合理。类似的年龄相关的变化以前也被证明是空间敏锐度的特征。
Detection thresholds to warming and cooling were measured in 13 regions of the body in 60 adults aged between 18 and 88 years. From these thresholds were constructed maps of thermal sensitivity homologous to body maps of spatial acuity (in the older literature two-point discrimination), long known to the somatosensory scientist. Maps of cold and warm sensitivity for young, middle-aged and elderly adults, show how sensitivity changes with age in the various body regions. Three characteristics emerge, irrespective of age: (1) sensitivity varies approximately 100-fold over the body surface. The face, especially near the mouth, is exquisitely sensitive, the extremities, by comparison, poor, other regions, intermediate. (2) All body regions are more sensitive to cold than to warm. (3) The better a region is at detecting cold, the better it is at detecting warm. With age, thermal sensitivity declines. The greatest changes take place in the extremities, especially the foot, where thresholds often become too large to measure. Central regions give up their sensitivity with age more slowly, and even (as in the lips) inconsequentially. Similar age-related changes have also previously been shown to characterize spatial acuity.