caa a22 4500 469122714 CHVBK 20180323133143.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF02368538 doi (NATIONALLICENCE)springer-10.1007/BF02368538 Electrode recovery potential [Elektronische Daten] [S. Mayer, L. Geddes, J. Bourland, L. Ogborn] In some instances the same electrodes are used for stimulation and then for recording a bioelectric event immediately after the stimulus. However, after the current pulse there remains an electrode potential that decays quasiexponentially. We have designated this falling potential the electrode-recovery potential. This study investigated the recovery potentials of single electrodes of rhodium, stainless steel, platinum and platinum-iridium in contact with 0.9% saline at room temperature (25°C) over a current density ranging from 0.1 to 100 mA/cm2 using a constant-current pulse. In all cases, with increasing current density, there was a decrease in the time for the electrode potential to fall to one half of the immediate post-stimulus value. Above about 20 mA/cm2 the decrease in recovery time was smooth with increasing current density. Below 20 mA/cm2, the recovery time was slightly irregular. The shortest recovery times were for platinum and platinum-iridium. The largest decrease in recovery time with increasing current density was for stainless steel, which decreased 10 fold from 0.1 to 100 mA/cm2. The recovery time for rhodium decreased about three-and-one half fold over the same current density range. It was found that the waveform of the recovery potential is not a simple exponential because the Warburg and Faradic components of the electrode-electrolyte interface are current-density dependent. In general, for all current densities studied (0.1-100 mA/cm2), there was a sudden initial fall in electrode potential with cessation of current flow, followed by a very gradual nonexponential decrease in potential. Pergamon Press Ltd., 1992 Electrode impedance nationallicence Recovery potential nationallicence Electrode potential nationallicence Warburg impedance nationallicence Faradic resistance nationallicence Mayer S. School of Electrical Engineering, Purdue University, W. Lafayette, IN aut Geddes L. Hillerbrand Biomedical Engineering Center, Purdue University, 47907-1293, W. Lafayette, IN aut Bourland J. Hillerbrand Biomedical Engineering Center, Purdue University, 47907-1293, W. Lafayette, IN aut Ogborn L. School of Electrical Engineering, Purdue University, W. Lafayette, IN aut Annals of Biomedical Engineering Kluwer Academic Publishers 20/3(1992-05-01), 385-394 0090-6964 20:3<385 1992 20 10439 https://doi.org/10.1007/BF02368538 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02368538 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mayer S. School of Electrical Engineering, Purdue University, W. Lafayette, IN aut NATIONALLICENCE 700 1- Geddes L. Hillerbrand Biomedical Engineering Center, Purdue University, 47907-1293, W. Lafayette, IN aut NATIONALLICENCE 700 1- Bourland J. Hillerbrand Biomedical Engineering Center, Purdue University, 47907-1293, W. Lafayette, IN aut NATIONALLICENCE 700 1- Ogborn L. School of Electrical Engineering, Purdue University, W. Lafayette, IN aut NATIONALLICENCE 773 0- Annals of Biomedical Engineering Kluwer Academic Publishers 20/3(1992-05-01), 385-394 0090-6964 20:3<385 1992 20 10439 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer