Title :
Signal-to-noise ratio of nerve signals recorded with full and open cylinder cuff electrodes
Author :
Sahin, Mesut ; Durand, Dominique M.
Author_Institution :
Dept. of Biomed. Eng., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
The authors compared the signal-to-noise ratios (SNRs) of nerve recordings obtained with an open cuff (a 270° cylinder) and a full cylindrical electrode (simulated by lifting the open electrode outside the solution) using an in vitro set-up. The thermal noise was considered as the main source of noise. The SNR with the open cuff was only 52±7% (n=3) less than that of a full cylindrical electrode, although the reduction in signal amplitude was 3.5±0.6 times. One may prefer to use the open cuff geometry to reduce the risk of nerve insult in certain nerve recording applications where this loss in SNR is acceptable
Keywords :
bioelectric potentials; biomedical electrodes; biomedical measurement; neurophysiology; noise; electroneurogram; full cylinder cuff electrodes; in vitro set-up; nerve insult risk reduction; nerve signals; open cylinder cuff electrodes; signal-to-noise ratio; thermal noise; Analytical models; Biomedical electrodes; Engine cylinders; Geometry; Impedance; In vitro; Noise generators; Noise level; Noise reduction; Signal to noise ratio;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802563
