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this post was submitted on 25 Aug 2023
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General Discussion
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For people like me that are curious:
Cute link to the Wiki page
A hiccup (scientific name singultus, from Latin for "sob, hiccup"; also spelled hiccough) is an involuntary contraction (myoclonic jerk) of the diaphragm or a disability that may repeat several times per minute. The hiccup is an involuntary action involving a reflex arc. Once triggered, the reflex causes a strong contraction of the diaphragm followed about a quarter of a second later by closure of the vocal cords, which results in the "hic" sound.
OP's note: myoclonic is fancy for a brief, involuntary, irregular (lacking rhythm) twitching of a muscle, a joint, or a group of muscles
Cute link to the myoclonic wiki page
So it's basically just like a muscle anywhere else twitching sometimes, thanks!
Now there's only understanding why can a sentence stop it is left to answer
I've always believed it has something to do with the way breathing is tied into both involuntary and voluntary muscle contractions. You can of course control your breathing, but if you forget about it entirely, you'll just keep doing it automatically without thinking.
Because your diaphragm is a crucial part of that loop, it can receive signals from the conscious part of your brain as well as the autonomous side of your nervous system that keeps things running when the lights are out upstairs. But the brain - having evolved over millions of years rather than being currently designed - works in strange ways, and getting a conscious signal to actually move to that specific nerve group can take some mental trickery.