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Electric and Magnetic Field Devices for Stimulation of Biological Tissues
Published on: May 15, 2021
A high-voltage bipolar transconductance amplifier for electrotactile stimulation
Matthew A Schaning1, Kurt A Kaczmarek
1University of Wisconsin, Madison, WI 53706, USA. mschaning@gmail.com
IEEE Transactions on Bio-Medical Engineering
|October 8, 2008
Summary
This study presents a high-performance amplifier for electrotactile stimulation, enabling precise fingertip stimulation studies. The device achieves high voltages and currents for advanced psychophysiological research.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Electrical Engineering
Background:
- Electrotactile stimulation is a key technology for sensory feedback.
- Understanding psychophysiological responses requires precise stimulation control.
Purpose of the Study:
- To describe a novel high-performance transconductance amplifier for electrotactile stimulation.
- To enable thorough investigation of fingertip stimulation using various waveforms.
Main Methods:
- Design and implementation of a transconductance amplifier.
- Characterization of output voltage, current, transconductance, and output resistance.
- Analysis of operational theory, safety, and performance.
Main Results:
- The amplifier achieves output voltages up to +/-600 V.
- Transconductance is up to 20 mA/V with output resistance of 8.8 MΩ.
- Output currents can reach +/-20 mA.
Conclusions:
- The developed amplifier is suitable for detailed psychophysiological studies of electrotactile stimulation.
- The design provides high voltage and current output for advanced research applications.
- Schematics, theory, safety, and performance data are provided.
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