Title :
Evaluation of the electrode-amplifier noise in high resolution biological signal acquisition
Author_Institution :
Lab. d´´Instrum. Micro-Inf. et Electron., Univ. Joseph Fourier, Grenoble, France
fDate :
30 Oct-2 Nov 1997
Abstract :
The noise and the impedance between two non-polarisable Ag-AgCl electrodes were investigated. We proposed a method to compute the equivalent noise at the amplifier input and output using a small number of measurable parameters. It is shown that for a low noise instrumentation amplifier the input noise in the bandwidth of interest (0.1-400 Hz) is in (2-4) μVpp range
Keywords :
bioelectric potentials; biomedical electrodes; biomedical electronics; electric impedance; electrocardiography; electromyography; instrumentation amplifiers; medical signal detection; thermal noise; transfer functions; Ag-AgCl; ECG signal; EMG signal; amplifier input/output; electrode-amplifier noise; electrode-tissue interface impedance; equivalent noise; high resolution biological signal acquisition; low noise instrumentation amplifier; nonpolarisable Ag-AgCl electrodes; thermal noise; transfer function; Biology computing; Biomedical measurements; Electrodes; Impedance; Noise generators; Noise level; Noise measurement; Polarization; Signal resolution; Skin;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.756979
