请问HN：寻找一篇关于心脏细胞兴奋的旧帖子。
你好！<p>我在寻找一篇最近的帖子（大约3-6个月前），其中展示了网格动画，以演示心肌细胞激活的过程，以及在后期如何一团死细胞可以引发“漩涡”，并且需要进行电复苏。我尝试用Algolia搜索，但没有找到。<p>提前感谢你！
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Hey!<p>I’m looking for a recent post (around 3-6 months old) in which grid animations are shown to demonstrate the process of heart muscle cell activation, and on a later stage, how a clump of dead cells can provoke a “vortex” and electrical reanimation is needed. I tried searching for it with Algolia but it’s not showing up.<p>Thank you in advance.