Noise-enhanced vibrotactile sensitivity in older adults, patients with stroke, and patients with diabetic neuropathy
Noise-enhanced vibrotactile sensitivity in older adults, patients with stroke, and patients with diabetic neuropathy
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DOI：
10.1053/apmr.2002.28025
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发表时间：
2002-02-01
影响因子：
4.3
通讯作者：
Collins, JJ
中科院分区：
文献类型：
--
作者：
Liu, W;Lipsitz, LA;Collins, JJ
目的：为了验证老年人、中风患者和糖尿病神经病变患者的振动触觉检测阈值可以通过引入机械噪声而显著降低的假设。设计：一项随机对照研究。设置：一所大学研究实验室。参与者：12名健康老年受试者（年龄范围，67- 85岁），5例卒中患者（年龄范围，24- 64岁）和8例糖尿病神经病变患者（年龄范围，53- 77岁）。干预措施：每个受试者的检测阈值（即，要检测的最低刺激水平），用于无机械噪声和有机械噪声的振动触觉刺激（即，具有小强度的随机振动）通过使用4步、2步和1步算法来确定。刺激被施加到指尖和/或第一跖骨的foot.Main结果Measure：检测阈值为vibrotactile stimulation.Results：检测阈值在指尖的振动刺激与机械噪声明显低于没有机械噪声的所有12名老年人，为4的5例中风患者，和所有8例糖尿病神经病变。8例糖尿病患者。机械噪声也显着降低了振动触觉检测阈值在foot.Conclusions：降低振动触觉灵敏度在老年人，中风患者，糖尿病神经病变患者可以显着改善与输入机械噪声。基于噪声的技术和设备可能被证明有助于克服与年龄和疾病相关的感觉运动功能丧失。
Objective: To test the hypothesis that vibrotactile detection thresholds in older adults, patients with stroke, and patients with diabetic neuropathy can be significantly reduced with the introduction of mechanical noise.Design: A randomized controlled study.Setting: A university research laboratory.Participants: Twelve healthy elderly subjects (age range, 67-85y), 5 patients with stroke (age range, 24-64y), and 8 patients with diabetic neuropathy (age range, 53-77y).Interventions: Each subject's detection thresholds (ie, minimum level of stimulus to be detected) for a vibrotactile stimulus without and with mechanical noise (ie, random vibration with a small intensity) were determined by using a 4-, 2-, and 1-stepping algorithm. The stimuli were applied to the fingertip and/or to the first metatarsal of the foot.Main Outcome Measure: Detection threshold for a vibrotactile stimulus.Results: The detection threshold at the fingertip for the vibration stimulus with mechanical noise was significantly lower than that without mechanical noise for all 12 elderly subjects, for 4 of the 5 patients with stroke, and all 8 patients with diabetic neuropathy. For the 8 patients with diabetes. mechanical noise also significantly reduced the vibrotactile detection threshold at the foot.Conclusions: Reduced vibrotactile sensitivity in older adults, patients with stroke, and patients with diabetic neuropathy can be significantly improved with input mechanical noise. Noise-based techniques and devices may prove useful in overcoming age- and disease-related losses in sensorimotor function.