Tactile sensitivity as a function of age

Abstract

To learn whether tactile sensitivity is decreased in elderly adults, we measured touch thresholds on the pad of the index finger in individuals aged 19 to 88 years. Semmes-Weinstein aesthesiometer filaments were used in a forced-choice procedure to eliminate response biases among subjects. Digit temperature and health data were also collected. Tactile thresholds increased significantly with age. A large proportion of elderly individuals had thresholds that were higher than the average for young adults, although older people varied widely in touch sensitivity. Neither reported illness nor medication use was significantly related in tactile threshold.