That particular "start" refers to "exploding head syndrome" (really-- there is such a thing) (and interestingly I have had the privilege (?) of experiencing it a few times, and it is the weirdest thing you've ever seen (heard?)) but yes, agree that's not what you might have.InsomniacZombie wrote: ↑Sat May 23, 2026 10:57 amI am not sure that this is a start/hypnic jerk, when I looked at few definitions it says that the sound that jolts one up is imaginary/auditory hallucination
Specifically, in an NPSG, there is simultaneous monitoring of EEG and breathing, incl. snoring. If the breathing has an anomaly (snore, flow limitation, hypopnea, apnea) which causes you to have the above episode, then you might consider CPAP etc. to address the issue (there's the AHI thing, but we'll cross that bridge etc.)).
If the breathing is absolutely normal and the jump happens out of the blue, then it's a "start" (really a layman's term). At that point, the other channels of the NPSG should be able to identify the cause. Some possibilities would include PLMs, myoclonus, and/or hypnic something or other (in order to be hypnic you'd have to be in a sleep-wake transition state (beginning of night or inherently bad sleeper), but again, NPSG would determine that.
