一般认为,房室结结区的结细胞没有自律性。最近日本学者Kokubun等人采用双微电极技术在小块兔房室结组织(0.2×0.2×0.2mm)上进行电压固定实验,记录到房室结结区的结细胞有明显的自律性电活动和典型的舒张期去极化。在房室结细胞动作电位期间,记录到四种动态离子电流,即钠电流(i_(Na)),慢内 Is generally believed that atrioventricular nodal junction cells do not have self-discipline. Recently Japanese scholar Kokubun et al. Used double microelectrode technique to conduct voltage fixation experiments on a small rabbit atrioventricular node tissue (0.2 × 0.2 × 0.2mm). It was found that the node cells in the node of atrioventricular node had obvious self-regulated electrical activity And typical diastolic depolarization. During the action potential of atrioventricular node cells, four kinds of dynamic ion current were recorded, namely sodium current (i_ (Na)), slow