Medical Engineering & Physics
Volume 30, Issue 4 , Pages 460-465, May 2008

Effects of consecutive slips in nerve signals recorded by implanted cuff electrode

  • Kai Yu Tong

      Affiliations

    • Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
    • Corresponding Author InformationCorresponding author at: The Hong Kong Polytechnic University, Department of Health Technology and Informatics, Room ST417, Kowloon, Hong Kong. Tel.: +852 2766 7662; fax: +852 2362 4365.
    • ,
  • Wei Rong

      Affiliations

    • Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
    • ,
  • Le Li

      Affiliations

    • Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
    • ,
  • Jun Cao

      Affiliations

    • Department of Orthodontics, Qindu Stomatology College, The Fourth Military Medical University, Xi’an, China

Received 8 January 2007; received in revised form 25 April 2007; accepted 13 May 2007. published online 30 June 2007.

Abstract 

Using an anaesthetized cat's central footpad pressed against an object as the model of a paralyzed human hand, a nerve signal recording system was developed to measure the effect of a group of consecutive slips between the footpad and the object. Electroneurographic (ENG) activity was recorded using a cuff electrode implanted around the tibial nerve. The relationship between the recorded nerve signals during consecutive slips was investigated. The analyzed results showed that the amplitude of the ENG signal corresponding to the first slip was significantly greater than subsequent slips. It was also shown that there was no significant difference in the amplitude of the ENG signal in subsequent slips. When the slip signal is used as a feedback and control signal for FES, two different thresholds or scaling factors should be applied for consecutive slips.

Keywords: Electroneurograph, Slip signals, Nerve cuff electrode, Cat animal model

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PII: S1350-4533(07)00095-1

doi:10.1016/j.medengphy.2007.05.007

Medical Engineering & Physics
Volume 30, Issue 4 , Pages 460-465, May 2008

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