The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9
SUBBABLE MESSAGE••• TO: Carla FROM: Christopher Next stop is whenever. Just be like, "stop." *** You can directly support Crash Course at ...
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What if everything you did, and thought, and felt could be communicated by pushing a button? It’d be like using the world’s simplest app -- one that just sends out a little ping, always at the same volume and length -- to communicate everything from, “It sure is cold in here,” to, “I love churros,” to, “Boy, I sure would like to breathe sometime soon.” Well, that is actually exactly how your neurons send ALL the impulses responsible for every one of your actions, thoughts, and emotions. When a neuron is stimulated enough, it fires an electrical impulse that zips down its axon to its neighboring neurons. But they’ve only got one signal that they can send, and it only transmits at one uniform strength and speed. What they can vary is the frequency or number of pulses -- like this [buzz...
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What if everything you did, and thought, and felt could be communicated by pushing a button? It’d be like using the world’s simplest app -- one that just sends out a little ping, always at the same volume and length -- to communicate everything from, “It sure is cold in here,” to, “I love churros,” to, “Boy, I sure would like to breathe sometime soon.” Well, that is actually exactly how your neurons send ALL the impulses responsible for every one of your actions, thoughts, and emotions. When a neuron is stimulated enough, it fires an electrical impulse that zips down its axon to its neighboring neurons. But they’ve only got one signal that they can send, and it only transmits at one uniform strength and speed. What they can vary is the frequency or number of pulses -- like this [buzz...
