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Design of the EPC-9, a computer-controlled patch-clamp amplifier. 1. Hardware
1Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06510, USA.
Journal of Neuroscience Methods
|February 1, 1995
Summary
The EPC-9 patch-clamp amplifier offers fully computer-controlled functions for recording cellular currents. This digital control eliminates manual adjustments, streamlining electrophysiology experiments.
Area of Science:
- Electrophysiology
- Biophysical instrumentation
Background:
- Patch-clamp electrophysiology is crucial for studying ion channel function.
- Traditional patch-clamp amplifiers often require manual adjustments, which can be time-consuming and introduce variability.
Purpose of the Study:
- To introduce the EPC-9 patch-clamp amplifier, a digitally controlled analog device.
- To highlight the novel circuit design enabling comprehensive computer control of all amplifier functions.
Main Methods:
- Description of the digital control architecture of the EPC-9 amplifier.
- Discussion of circuit design innovations facilitating computer control over gain, range, transient cancellation, and calibration.
Main Results:
- The EPC-9 amplifier integrates all essential functions under computer control.
- Elimination of front-panel controls and internal adjustments simplifies operation and enhances reproducibility.
Conclusions:
- The EPC-9 amplifier represents an advancement in electrophysiology instrumentation through full digital control.
- Computer-controlled functions in patch-clamp amplifiers offer significant advantages for modern research.