Excitable cells

Exciting simulations! :) And an excellent explanation.

From time to time I get episodes of sudden tachycardia¹. It's a very strange feeling: one second everything is fine, the next my heart jumps in my throat and starts beating at 230 bpm (not a typo). After a while, just as quickly as it came, the tachycardia goes away and I'm back at whatever HR I was before the trigger. If it doesn't go away by itself, breathing in deep and holding my breath typically does the trick. It's like a light switch! A bit scary, but also very fascinating.

Thanks for explaining so well what goes on "under the hood"!

¹ https://en.wikipedia.org/wiki/Paroxysmal_supraventricular_ta..., I believe.

I have the same condition. I was diagnosed at a very younger age with Wolff-Parkinson-White syndrome. It might be worth looking into.

https://www.mayoclinic.org/diseases-conditions/wolff-parkins...