Hypnagogic Hallucinations

Interesting Facts about Hypnagogic Hallucinations

There are several psychiatric and medical causes behind hypnagogic hallucinations.  These are associated with hypnagogia which is the transitional state that you encounter between being awake and fully asleep.  Mental phenomena that typically occur during this phase of threshold consciousness include sleep paralysis, out of body experiences, lucid dreaming and hallucinations.

This half-awake or half-asleep state of hypnagogia is also referred to as presomnal, visions of half-sleep, anthypnic sensations, borderland of sleep, half-dream state, sleep onset dreams and pre-dream condition.

Sensory Phenomena

There are many sensory experiences that you may encounter while transitioning to sleep from minor and vague visions to extreme hypnagogic hallucinations.


There are many causes associated with hypnagogic hallucinations, such as:


Hypnagogic Sensations

These dream-like experiences are extremely vivid that generally occur either right before you wake up or just prior to following asleep.  When they are accompanied with sleep paralysis, the experience is usually quiet frightening.  While features may vary from one individual to another, common feelings are fear, vividness, falling sensation, pressure on the body, sensing a presence, impending sense of death and feeling as though you are unable to breathe.

It is not uncommon for people in the hypnagogia state to see lights, shadows or people walking in the room around them some feel as though someone is grabbing them while others are experience floating.

During this state, you may appear to be awake yet you are sleeping.  At least 40 percent of individuals experience some type of hypnagogic hallucinations at least once in their lives while for others it is a common occurrence.