Abstract
A series of experiments have been carried out to see age differences in cutaneous warn and cold sensation
thresholds using with healthy young, middle-aged, and elderly Japanese females. In the present study, 15 locations in the
body have been chosen as target location in order to discuss regional difference in thermal sensitivity as well. The obtained
results of the experiment showed that aging effects were found to be significant in both the warm and cold sensation
thresholds in each target location. Precisely, the sensitivity to detect coldness was significantly greater in the young females
than that in both the middle-aged and the elderly females. The sensitivity was also greater in the middle-aged females than
that in the elderly. While there was a remarkable difference in the sensitivity to detect warmness between the young and the
elderly females, there was not a significant difference in the one between the middle-aged and the elderly females. In addition,
difference between the young and the middle-aged females was not found to be significant. Therefore, the obtained results
indicate that the sensitivities to detect both warmness and coldness in the elderly females decrease with aging.
