Survey: Why do we close our eyes when we sleep? When we cry? When we imagine? When we kiss?

Sleep is generally defined by the presence of certain types of electrical activity in the brain. When people are awake, the electrical activity of their brain, as measured by an electroencephalogram, is desynchronized and of low amplitude. As a person enters sleep, the pattern of their brainwaves changes from low amplitude, higher frequency waves to higher amplitude, lower frequency waves. Additionally, sleep is subdivided into different stages. These stages are defined by the frequency and amplitude of the electrical waves being generated by brain activity, and are also related to easily how a person can be aroused by an external stimulus. Finally, there is a separate stage of sleep called rapid eye movement (REM) sleep, which is characterized by a more "awake" looking brain wave pattern, eye movements, and dreaming.

So thats covered sleep, i think we close our eyes when we kiss/imagine to be more in the moment

And imagining? I dont really know, its more visual with your eyes closed isnt it. :)

Out of fatigue I suppose.

The tears actually burn, and closing the eyes brings a soothing feeling.

once you close up off one on the grounds that (sight in this occasion) your different senses, style, sense, scent, and your potential to take heed to are greater suitable dramatically, this reasons you to diminish out one experience which you do no longer prefer as a lot on the time (say tears are fogging your resourceful and prescient) and have the potential to soak up each thing else jointly with your senses which will relatively enable you to in this occasion.

Concentration on a particular stimulus..

Be it on a physical, mental, or emotional stimulation. It it's more important than what you are seeing, you close your eyes to stop the visual stimulation.

To block out visual stimuli. An unconscious reaction that enables us to focus our other senses on the the current event.

I stare into space when I imagine, they aren't closed when I cry either :D

I think it's just a subconscious thing that we do without knowing the reason why we do it, or even that we close our eyes.

I actually kiss with my eyes wide open

I don't close my eyes when I imagine.

Someone said my eyes are kinda open so I can do everything with eyes open O.O