Bodily Oddities

Closed-eye hallucinations

Also called: Closed-eye visualizations · CEV · Hypnagogic imagery

Close your eyes and you do not see nothing. You see speckle, drifting colour, and, as you fall asleep, moving patterns and even scenes. Everyone has them. Almost nobody talks about them.

Eyes Brain Perception Involuntary
Try it Sleep Spiritual

How common

Everyone Universal · ~100% The simple noise is universal. The later levels vary between people and depend on tiredness.

Does this happen to you?

These are answers from visitors, not a study.

How it works

Closed-eye hallucinations are the things you see with your eyes shut. They are usually sorted into levels, from faint noise to full scenes1.

Level 1 is visual noise. The dark grey behind your eyelids, called eigengrau, is covered in a fine moving speckle. It comes from random firing in the retina and the visual system3. Everyone has it, all the time.

Level 2 is light and colour. Slow blobs and clouds of colour drift across the field. Pressing on the eye adds bright flashes and rings called phosphenes1.

Level 3 is patterns and motion. Geometric shapes, tunnels, spirals, and grids appear and move. These are common in the minutes before sleep, when they are called hypnagogic imagery2. Most people see them but forget them by morning.

Level 4 is objects and scenes. Faces, places, and short scenes appear with the detail of a dream, while the person is still partly awake. This level is reported in deep hypnagogia, in long meditation, and in sensory deprivation1. Experienced meditators describe lights and images that come and go during long sits4.

None of these are signs of anything wrong. They are the visual system running with no input. In the dark, the brain still has to do something with the wiring, and this is what it does.

Try it

  1. Lie down in a dark room and close your eyes. Cover them with your hands to block the last light.
  2. Look at the darkness without trying to see anything. Notice the fine speckle. That is level 1.
  3. Keep watching for a few minutes. Slow patches of colour drift by. That is level 2.
  4. Do this when you are tired and about to fall asleep. Geometric patterns and moving shapes appear. That is level 3.
  5. Do not press on your eyes to make it stronger. Pressure adds phosphenes, but repeated pressure is not good for the eye.

History and culture

Many meditation traditions describe lights and colours that appear during practice. Some treat them as milestones, and some treat them as distractions to ignore4. Either way, they are the same imagery that everyone sees at the edge of sleep2.

Sources and further material

  1. Encyclopedia Closed-eye hallucination
  2. Encyclopedia Hypnagogia
  3. Encyclopedia Eigengrau
  4. Community r/Meditation Frequent reports of colours and patterns during long sits.
Eyes Perception

Eigengrau

The colour you see in total darkness is not black. It is a very dark grey, because the light-sensing cells in your eyes fire a little even when no light reaches them.

Everyone
Brain Involuntary

Hypnagogic hallucinations

Vivid images, sounds, or touches that appear while you are falling asleep or waking up. A face, a voice saying your name, a hand on your shoulder. They are dream fragments arriving early or late, and they are normal.

About 25–37% of people
Brain Perception

Prisoner's cinema

After hours or days in darkness, people start to see light shows: colours, geometric patterns, and sometimes figures or scenes. Prisoners, miners, polar explorers, and meditators all report it.

Up to 77% of people after 4 days blindfolded
Brain Perception

Ganzfeld effect

Fill your whole field of view with a featureless colour and, within minutes, your brain starts inventing shapes, lights, and scenes. Two halved ping-pong balls and a lamp are enough to do it at home.

Most people who try it