Bruce M F
J Neurol Neurosurg Psychiatry. 1980 Aug;43(8):730-4. doi: 10.1136/jnnp.43.8.730.
Touch thresholds in a group of elderly people were determined for three sites on the little finger. They were found to be raised by some two and a half times in each site, in comparison with a group of young subjects. An age-associated reduction in the number of Meissner corpuscles also was observed, but it is suggested that this may reflect a general reduction in peripheral innervation and may not be necessarily directly related to the decrease in tactile sensitivity. No significant sex differences were found either in sensory thresholds, or in the population density of corpuscles.
测定了一组老年人小指上三个部位的触觉阈值。结果发现,与一组年轻受试者相比,每个部位的触觉阈值提高了约2.5倍。还观察到迈斯纳小体数量随年龄增长而减少,但有人认为,这可能反映了外周神经支配的普遍减少,不一定与触觉敏感性的降低直接相关。在感觉阈值或小体的群体密度方面,未发现显著的性别差异。