https://tube.loping.net/videos/watch/321364c6-07b4-4d8c-bfa2-c9d7181407c9 Note: You can tell that I didn't study neurology in university! I have a few points to add about my explanation about action potential propagation: Giant squid axon do not have nodes of Ranvier. They handle this in a different way, I implied that the inside of the axon is negatively charged because of an excess of potassium ions. I want to make clear that that is not what happens. Potassium ions are positively charged. The negative charge is because larger, negatively charged anions cannot leave to go outside., Thanks to various viewers who pointed this out. I am sure there are more. I am ashamed for my biology teacher and apologize for the confusion. Links: Patreon (Support the channel directly!): https://www.patreon.com/Asianometry, X: https://twitter.com/asianometry, Bluesky: https://bsky.app/profile/asianometry.bsky.social, Newsletter & Podcast (available through Stratechery Plus): https://asianometry.passport.online/, LinkedIn (feel free to connect): www.linkedin.com/in/jon-y-asianometry Sun, 12 Jul 2026 14:08:28 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.loping.net https://tube.loping.net/lazy-static/avatars/8a56e488-2120-4649-a417-badf5893657b.png https://tube.loping.net/videos/watch/321364c6-07b4-4d8c-bfa2-c9d7181407c9 All rights reserved, unless otherwise specified in the terms specified at https://tube.loping.net/about and potential licenses granted by each content's rightholder.