At the single-cell level, upregulation of the L-type Ca2+ current ICa,L steepened restitution curves of action potential duration and conduction velocity compared with the control.

• 和对照组相比，在单个细胞水平，上调L-型钙通道的离子流可以导致动作电位持续时间和传导速率的重建曲线变的陡峭。