The studies of the mechanisms of arrhythmogenesis and the action of antiarrhythmic drugs have already focused on the events of ionic channel currents in isolated single heart cells.
而对心律失常发生机制及药物抗心律失常作用机制的研究，也都聚焦于对心肌细胞离子通道及跨膜离子流的研究。
The signal of single ion channel is stochastic ionic currents on the order of 1pA, which can be recorded by means of patch clamp technique.
细胞膜离子单通道信号是皮安级的随机电流，膜片钳技术可以记录这些信号。
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