When I’m falling asleep, if I hear a sound that startles me, why is it accompanied by a bright flash inside my eyelids before I properly rouse.

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When I’m falling asleep, if I hear a sound that startles me, why is it accompanied by a bright flash inside my eyelids before I properly rouse.

In: Biology

The matrix needs to load the right images for you, according to the place you expect to see and the sound you just heard.

It’s called Exploding Head Syndrome. [https://en.wikipedia.org/wiki/Exploding_head_syndrome](https://en.wikipedia.org/wiki/Exploding_head_syndrome) It’s not a mental illness, it’s more of a brain misfire, though the cause isn’t really known. And yes, it is kind of scary. I’ve had it happen also.