臺灣已於1993年時成為高齡化社會，2018年轉變為高齡社會，預估將於2025年進入超高齡社會。(國際上定義為65歲以上之人口占總人口比率達到7%、14%與20%，分別稱之為高齡化社會、高齡社會及超高齡社會)。
隨著年紀增加，長輩在視力、平衡、認知等方面皆會出現障礙，平衡感的減退是老化過程中的重要指標之一。通常一般健康成年人在60歲以後將開始有平衡感減退的初期現象，之後將會加速退化，主要的原因是感知神經系統的退化，造成平衡功能的退化，如何預防家中長輩跌倒是現代人都應該了解的課題。
本研究應用胡志佳學長已設計完成之隨機振動驅動電路及裝置架構，施加微小訊號於足部神經元，進行單絲探針實驗，證明利用隨機振動，的確能增強人體神經感知能力，改善皮膚之敏感度，經實驗結果證實，透過此裝置對於增強人體感知神經具有明顯的效果。本次實驗受測者年齡層為20~30歲之青壯年，依然有顯著的效果，進而證實對於年長者會有更明顯的效果。未來可將此結論應用在振動鞋墊上達到幫助老人預防跌倒之目的。

Taiwan has already become an aging society in 1993 and transformed into an aging society in 2018. It is predicted that it will soon enter a super-aged society in 2025. (It is defined internationally as 7%, 14% and 20% of the population over 65 years of age in the total population, which are called aging society, senior society and super-age society respectively.)
Along with the growth of the age, the elders will have obstacles in vision, balance, and cognition. The loss of balance is one of the important indicators in the aging process. Normally, healthy adults will begin to have the initial phenomenon of loss of balance after the age of 60, and then the deterioration will accelerate. The main reason is the deterioration of the sensory nervous system, resulting in the deterioration of the balance function. How to prevent the fall of the elders at home is a topic that modern people should understand.
This study applies the random vibration drive circuit and device architecture designed and completed by Mr. Chih-Chia Hu, applies tiny signals to foot neurons, and conducts monofilament probe experiments to prove that the use of random vibration can indeed enhance the human nerve perception ability and improve skin Sensitivity. The experimental results have confirmed that this device has a significant effect on enhancing human sensory nerves. The test subjects in this experiment are early adulthood between 20 and 30 years old and still have a significant effect, which further proves that there will be a more obvious effect for the elderly. This conclusion can be applied to vibration insoles to help the elderly prevent falls in the future.

[1] James J. Collins, Attila A. Priplata, Denise C. Gravelle, James Niemi, Jason Harry, Lewis A. Lipsitz, “Noise-Enhanced Human Sensorimotor Function,” IEEE Engineering in Medicine and Biology Magazine, vol.12, pp.76-83, 2003.
[2] Gravelle, Denise C. Laughton, Carrie A.; Dhruv, Neel T.; Katdare, Kunal D.; Niemi, James B.; Lipsitz, Lewis A.; Collins, James J.“Noise-enhanced balance control in older adults”, NeuroRepor, vol.13,pp.1853-1856,2002.
[3] John K. Douglass, Lon Wilkens, Eleni Pantazelou , Frank Moss, “Noise enhancement of information transfer in crayfish mechanoreceptors by stochastic resonance”, Nature 365, 337-340, 1993.
[4] J.J.Collins, T.T.Imhoff, and P.Grigg, “Noise-mediated enhancements and decrements in human tactile sensation”, Physical Review E, vol. 56, pp. 923-926, 1997.
[5] Dhruv, Neel T.Niemi, James B.Harry, Jason D. Lipsitz, Lewis A. Collins, James J, “Enhancing tactile sensation in older adults with electrical noise stimulation”, Physical Review E, vol.13, pp.597-600, 2002.
[6] 蕭正光，“台灣地區骨質疏鬆症之流行病學現況”，臺灣地區骨質疏鬆症研討會，2002。
[7] 李燕鳴，“臺灣地區老年人之事故傷害及預防”，台灣老年學暨老年醫學會，2005。
[8] J.D. Harry, J.B. Niemi, A.A. Priplata, J.J. Collins, “ Balancing act [noise based sensory enhancement technology]”, IEEE Spectrum, vol.42,pp.36-41,2005.
[9] R. Benzi, G. Parisi, A. Sutera, and A. Vulpiani, “Stochastic resonance in climatic change,” Tellus, vol. 34, pp. 10-16, 1982.
[10] Moss F, Ward LM, Sannita WG , “ Stochastic resonance and sensory information processing: a tutorial and review of application”, Physical Review E, vol.115 , pp.267-281 , 2004.
[11] Peter Hanggi , “Stochastic Resonance in Biology How Noise Can Enhance Detection of Weak Signals and Help Improve Biological Information Processing”, ChemPhysChem, vol.3,2002.
[12] Cari Wells, Lawrence M. Ward, R. Chua and J. Timothy Inglis, “Touch Noise Increases Vibrotactile Sensitivity in Old and Young,” Psychological Science, vol. 16, pp. 313, 2005.
[13] Enrico Simonotto, Massimo Riani, Charles Seife, Mark Roberts, Jennifer Twitty,Frank Moss, “Visual Perception of Stochastic Resonance”, Physical Review Letters, vol.78, 1997.
[14] M Stemmler, M Usher, E Niebur , “Lateral interactions in primary visual cortex: a model bridging physiology and psychophysics”, Science, vol.269, pp.1877-1880, 1995.
[15] Cari Wells, Lawrence M. Ward, R. Chua, J. Timothy Inglis, “Touch Noise Increases Vibrotactile Sensitivity in Old and Young”, Psychological Science, vol.16 , 2005.
[16] J.C. Rothwell “Control of human voluntary movement”. New York: Chapman and Hall,1987.
[17] Hijmans, Juha M.; Geertzen, Jan H. B.; Schokker, Bart; Postema, Klaas “Development of vibrating insoles”, International Journal of Rehabilitation Research, vol.30 , pp.343-345 , 2007.
[18] 何冠廷、陳弘源、陳燦耀、方冠榮、張家欽，“儲能發展的勁旅-鋰離子電池”，科學發展，557期，第60~65頁，2019。
[19] 胡志佳，“應用於增進行走平衡之隨機振動驅動電路”，國立清華大學，電子工程研究所，碩士論文，2014。
[20] 教育部學習資源網，“主題5:生物體的協調作用”。
網址:http://siro.moe.edu.tw/teach/query.php?action=read_content&p=778&d
[21] 林思宇， “老人跌倒是警訊 無外傷也要找病根”，今周刊，健康，1150期，2019。
[22] Tcera，“壓電效應”。
網址: http://www.tcera.com.tw/4-Piezoelectricty_C.html
[23] North Coast，“Touch Test Evaluators”。
網址: https://www.ncmedical.com/item_1278.html