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J. Neurosci. Methods · Jun 2008
A voltage-controlled current source with regulated electrode bias-voltage for safe neural stimulation.
- Martin Schuettler, Manfred Franke, Thilo Bernhard Krueger, and Thomas Stieglitz.
- University of Freiburg, Department of Microsystems Engineering-IMTEK, Laboratory for Biomedical Microtechnology, Georges-Koehler-Allee 102, 79110 Freiburg, Germany. schuettler@imtek.de
- J. Neurosci. Methods. 2008 Jun 30; 171 (2): 248-52.
AbstractA current source for neural stimulation is presented which converts arbitrary voltage signals to current-controlled signals while regulating the offset-voltage across the stimulation electrodes in order to keep the electrodes in an electrochemical state that allows for injecting a maximum charge. The offset-voltage can either be set to 0V or to a bias-voltage, e.g. of a few 100mV, as it can be advantageous for fully exploiting the charge injection capacity of iridium oxide electrodes.
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