Skin contact force information in sensory nerve signals recorded by implanted cuff electrodes

被引：81

作者：

Haugland, Morten K. ^{[1
]}

Hoffer, Andy ^{[1
]}

Sinkjaer, Thomas ^{[1
]}

机构：

[1] Aalborg Univ, Aalborg, Denmark

来源：

IEEE Transactions on Rehabilitation Engineering | 1994年 / 2卷 / 01期

关键词：

Electrodes - Functional neural stimulation - Mathematical models - Musculoskeletal system - Skin;

D O I：

10.1109/86.296346

中图分类号：

学科分类号：

摘要：

When functional neuromuscular stimulation (FNS) is used to restore the use of paralyzed limbs after a spinal cord injury or stroke, it may be possible to control the stimulation using feedback information relayed by natural sensors in the skin. In this study we tested the hypothesis that the force applied on glabrous skin can be extracted from the electroneurographic (ENG) signal recorded from the sensory nerve. We used the central footpad of the cat hindlimb as a model of the human fingertip and recorded sensory activity with a cuff electrode chronically implanted around the tibial nerve. Our results showed that the tibial ENG signal, suitably filtered, rectified, and smoothed carries detailed static and dynamic information related to the force applied on the footpad. We derived a mathematical model of the force-ENG relation that provided accurate estimates of the ENG signal for a wide range of force profiles, amplitudes, and frequencies.

引用

页码：18 / 28