Anatomy of the eye It doesn’t always take a bump on the head to. Hypnagogia (the hypnagogic state is the state of transition from wakefulness to sleep, a state of profound relaxation in which visual phenomena of this type can spontaneously occur. Brain cells then send out random electrical impulses, which your brain interprets as flashes of light that may seem like stars. The most common reason is due to changes in the vitreous which is the clear jelly-like hyaluronic acid which fills the back of the eye. Information on entoptic phenomena (visual effects originating within the eye Some information on the sound-induced flash illusion and a test to see whether Watching a single flash of light and hearing two beeps, they see two Research is currently underway on this topic 1."ġ See, for example, Sagiv & Ben-Tal (forthcoming).Īlso people who are especially sensitive to what is called the “sound-inducedįlash illusion”, which has been the subject of scientific experiments: on ThereĪre other possibilities for hypnagogic synesthetic experiences, though, such asĪ touch to the body making you think someone is calling your name. Loud noise, such as a door slamming, produces a synesthetic visual flash. And it didnt hurt my eyes, I didnt squint. kind of exploded I guess, filling the whole room, with a bright white light. Before I could even start to get up, there was a random flash of light right behind my head. Such experiences are usually ‘sound à visual’ most commonly, a Were talking, and I had told them that I was about to go to bed. This is what Sean Day says about this subject in his book Synesthetes (2016/2021):Īre indications that people in general – that is, regardless of whether theyĪre congenital synesthetes or not – have hypnagogic synesthetic experiences at It’s not uncommon for people to report seeing flashes of white light out of the corner of their eyes, or appear as streaks in their peripheral vision. (“seeing stars”), a sharp pain or even, for some people, being unexpectedly Phosphene patterns can also sometimes be generated by a blow to the head
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