Effect of high frequency burst added prior to each dermal electrical stimulation

2017 Fiscal Year Final Research Report

• Project/Area Number: 26350650
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rehabilitation science/Welfare engineering
• Research Institution: Fukushima University
• Principal Investigator: Futami Ryoko 福島大学, 共生システム理工学類, 教授 (20156938)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 機能的電気刺激 / 選択的神経刺激 / 神経モデル

Outline of Final Research Achievements

In functional electrical stimulation (FES) to control paralyzed extremities, "inverse size principle, or reverse recruitment" is known as an effect in which the bigger the diameter of an nerve fiber is, the lower the electrical threshold is. It is also known that this effect degrades the controllability of muscle tensions and joint torques generated by FES.
In this research, relating to the inverse size principle, a new stimulation waveform was proposed and its effects were confirmed by Hodgkin-Huxley model, HH-based cable model, and actual electrical stimulation on human forearms. The proposed stimulation waveform was a repetition of the set of two bursts of sinusoidal/rectangular wave, in which the first bursts are expected to modulate the sensitivities of nerve fibers for the second bursts.

Free Research Field

生体情報工学