SOMATESTHETIC SENSITIVITY IN YOUNG AND ELDERLY HUMANS
SOMATESTHETIC SENSITIVITY IN YOUNG AND ELDERLY HUMANS
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DOI：
10.1093/geronj/41.6.732
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发表时间：
1986-11-01
期刊：
影响因子：
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通讯作者：
KENSHALO, DR
中科院分区：
文献类型：
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作者：
KENSHALO, DR
对 27 名年轻人（19 至 31 岁）和 21 名老年人（55 至 84 岁）的两个部位（鱼际隆起和足底）的六种皮肤刺激模式（单一斜坡和保持皮肤凹痕 - 触觉、40 和 250 赫兹振动、温度升高和降低以及有害热）测量了绝对阈值。老年人和年轻人组的比较表明，老年人对两个部位的机械刺激（触觉和振动）的敏感度显着低于年轻人（p = s .001）。任一部位的热刺激阈值（热痛、冷痛和热痛）均未发现显着差异，但老年人足部对热刺激的敏感度明显低于年轻足部（p = s .001）。将老年人的阈值与年轻群体的敏感性缺陷阈值进行比较。所有老年参与者都对一个或另一个部位的一种或多种刺激模式表现出缺陷。机械刺激的缺陷明显多于热刺激，p = £ 0.01。随着年龄的增长，缺陷的频率并没有增加
Absolute thresholds were measured on 27 young (ages 19 to 31) and 21 elderly (ages 55 to 84) humans to six modes of cutaneous stimulation (single ramp-and-hold skin indentations — tactile, vibration at 40 and 250 hz, temperature increases and decreases, and noxious heat) at two sites, the thenar eminence and the plantar foot. Comparisons of the elderly and young groups showed that elderly persons were significantly, p =s .001, less sensitive than young individuals to mechanical stimuli (tactile and vibration) at both sites. No significant differences were found in thresholds to thermal stimuli (warm-, cold-, and heat-pain) at either site except elderly feet were significantly, p =s .001, less sensitive than young feet to warm stimuli. Thresholds of elderly individuals were compared with the young group thresholds for deficits in sensitivity. All elderly participants showed deficits to one or more of the stimulus modes at one or the other site. There were significantly, p =£ 0.01, more deficits to mechanical than to thermal stimuli. There was no increase in the frequency of deficits with increasing age