Excitable cells
jenevoldsen.com
Excitable cells
1–10 of 51 posts
Re: Excitable cells
#2Absolutely fantastic. Well done!
Re: Excitable cells
#3Learned about the heart today! Thank you!
I wonder what other types of cells / tissues can be simulated by cellular automata?
Re: Excitable cells
#4Anybody know similar article but about blood flow / hemorheology ?
Re: Excitable cells
#5Excellent article! Well written and the animations make it so much easier to understand. However I was unable to get the loops to go.
Re: Excitable cells
#6As someone who lives with this reality moment to moment (thanks to a deeply bridged LAD coronary artery) it is interesting to see a visual representation of these effects.
Re: Excitable cells
#7Excellent article! Well written and the animations make it so much easier to understand. However I was unable to get the loops to go.
I was able to do it by clicking in a few places in quick succession evenly spread out.
Re: Excitable cells
#8Excellent article! Well written and the animations make it so much easier to understand. However I was unable to get the loops to go.
I was able to do it by clicking in a few places in quick succession evenly spread out.
Try clicking in one place repeatadly and adjust clicks slightly to always go next to the fastest refractory cell possible. This works like a charm to induce arrhytmia
Re: Excitable cells
#9Exciting 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.
Re: Excitable cells
#10Excellent article! Well written and the animations make it so much easier to understand. However I was unable to get the loops to go.
I was able to consistently start a loop in one click by clicking on the edge between grey and white (slow and fast refractory) cells ASAP after a normal beat.
If I'm fast enough, the wave can't spread to the grey cells so it only goes in direction around the red cells and starts a loop.
(But you can't do this on the first image with a Defibrillate! button because there are no slow cells.)