Research: Sleep Paralysis & Hypnogogic Hallucinations

I have set up this page to address one of the most mysterious of “dream” experiences: Sleep Paralysis, and its associated experiences.

We know so little about this experience, yet it has been documented by thousands of people over hundreds of years (maybe even more) and across a variety of cultures.

Maybe by sharing our experiences and knowledge we can move this field forward and help develop a more robust and satisfying answer to not just what causes this experience, but what it means to have it, and how our perceptions of reality, consciousness and our self may be impacted by it.

So, please join in and let’s see what we can discover!

Here’s where I started:


I am seeking people willing to share their experiences, please fill in the form below or contact me directly on:

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11 thoughts on “Research: Sleep Paralysis & Hypnogogic Hallucinations

  1. This article, like most on the subject of SP and HH refers to one person’s particular experience, with the usual advice to check the effects of medication, avoid sleeping on your back, reduce stress and try to live a healthy life style with regular sleeping hours.

    Apparently also though, making sure you wake up completely after an”episode” and walking around etc, can help prevent having another SP/HH later in that same night.

      1. Have you ever thought that these half-wake conditions can actually be managed like lucid dreaming, learning to control the situations instead of being cotrolled by fear. The physical conditons are important, but psycologically being able to release fear of it, is just as important. Why, because it helps you to calm down breathing, so even if you enter the state of sleep-paralysis you realize you can keep a steady breathing and come out of it in a more controlled fashion.

  2. I just want to add that folks who experience frequent sleep paralysis may have undiagnosed Narcolepsy. It’s not uncommon for someone without Narcolepsy to experience this once or twice in a lifetime, but frequent experiences may indicate Narcolepsy. It’s hard to get an accurate diagnosis of Narcolepsy. I have had SP and HH since childhood but was not diagnosed with Narcolepsy until I was 38. That’s a long time to not know what’s going on… My reason for this response is based in my hope other people can figure it out much sooner.

  3. Hypopnea can occur during sleep. In this case it may turn into a serious sleeping disorder. Sleep hypopnea can be characterized by person’s repetitive stops of breathing or low breathing for short periods of time during sleep. Speaking in anatomical terms, there is intermittent collapse of the upper airway and reductions in blood oxygen levels during sleep. Thus, a sleeping person becomes incapable to breathe normally and awakens with each collapse. Quantity and quality of sleep is lowered, what results in sleep deprivation and excessive daytime sleepiness. The most usual physiological consequences of hypopnea are cognitive disfunction, coronary artery disease, myocardial infarction, hypertension, memory loss, heart attack, stroke, impotence, psychiatric problems. People suffering from sleep hypopnea increase considerably the overall number of traffic accidents. Their productivity is diminished and they have constant emotional problems and strains. :

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  4. This has been happening to me a lot over the last 7 years. More so now than ever. I would have to say every time I lay down and nap and usually 3 to 4 times a week now.
    When I fall asleep, I dream, just as everyone does. But it always goes a step or two further. It feels like I leave my body and float around. I see myself sleeping. One time I could have sworn that I went to the bedroom door and opened it up. Next thing I knew I was back on the bed again. I tried to call out. I thought I was calling out. I would hear people talk and hear things going on in the living room. Tonight was different though. This time I could feel something different about my sleep. When I woke this is what I remember of it. I felt myself falling asleep differently. I can’t explain into words what that means. I would roll over onto my back but everything was like a ripple and my hand and body were moving in slow motion. I could see rippling everywhere. I rolled over to my side and still everything was in a ripple effect. Then I heard a music box and a voice in the distance. I felt fear shortly after. I remember calling out “Jesus where are you?” Bit it came out quietly and slow. What does this mean? This experience is the first type with the rippling effect but the others happen all the time. What’s going on with me? Can anyone help or give me insight on this?

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