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Clinical application of an active electrode using an operational amplifier

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3 Author(s)
Nishimura, S. ; Inst. of Biomed. Eng., Keio Univ., Kanagawa, Japan ; Tomita, Y. ; Horiuchi, T.

An active electrode (d10 mm, t6 mm) that functions as an impedance transformer (with an input impedance >10 G Omega and an output impedance <1 Omega ) by means of which one can derive surface EMG without any skin preparation and paste is presented. This electrode was compared with a conventional one, and it was ascertained that the electrode could replace the conventional one and was preferable because it required less preparation time and was less affected by environmental noise.

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Biomedical Engineering, IEEE Transactions on  (Volume:39 ,  Issue: 10 )