Whenever I hear ‘electrical signals’ in terms of the heart’s function, I get completely lost. Is this actual electricity or just a term for brain signals? Or are brain signals electrical? Thanks
In: Biology
Nerve signals and brain signals have an electric component, but it’s not like the heart’s electrical signals. The heart uses much stronger signals to directly flex the muscles inside the walls of the heart.
The “heartbeat” wave is self-regulating, and it’s not controlled by the brain. It can be disrupted, with common arrhythmias like atrial fibrillation, flutters or PSVT. That’s how an external shock can reset the heart to proper rhythm, and the same sort of thing doesn’t “reboot” the brain.
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