Zaslal: po 15. listopad, 2021 2:58 Předmět: Why Does Hypnic Jerk Occur?
Researchers are not able to give an exact reason behind Hypnic jerks. Still, there are many valid theories about it.
A very interesting hypothesis about hypnic jerks is that they are natural process during the transition from wakefulness to the sleep state. It argues that it is caused when the neurons misfire during the change of state.
The second popular theory approaches the problem from an evolutionary standpoint. It explains that sleep starts are an ancient primate reflex to the relaxation of muscles during the onset of sleep. As primates were tree dwellers, this relaxation of muscles can cause falling off the tree. The self-protection system in the brain essentially misinterprets the relaxation thus and tries to protect us by jerking us awake.
Scientists categorize the sleep starts as myoclonic jerks. These are mysterious and involuntary muscle twitches affecting the body. Hiccups are a kind of myoclonic jerk specifically affecting the diaphragm.
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