Hypnopompic hallucination

A **hypnopompic hallucination** is a dreamlike hallucination that occurs while one is waking up, or in the hypnopompic transitional state moving betwixt sleep to wakefulness. Due to these hallucinations and their similitude to dreams it is believed they are "REM intrustions" into wakefulness, and that the mechanism by which these occur is similar, though may not be *completely* the same.

Hypnopompic hallucinations are typically harmless, but for some may cause pain, such as in the case of a 43-year old woman who experienced limb pain, with no "standard physical source for the pain" being identified. In addition, hypnopompic hallucinations are prevalent in those with narcolepsy, sharing the tetrad of **a.)** excessive daytime sleepiness, **b.)** cataplexy, **c.)** hypnagogic hallucinations, and **d.)** sleep paralysis.

## Differences from hypnogogic hallucination

Hypnopompic hallucinations are distinct from hypnogogic hallucinations in that they are usually projected onto the extenal space (i.e. sleep paralysis and conflation of the hallucination with outside stimuli such as phones ringing or people knocking at the door). They also tend to be longer lasting and more dream-like than hypnogogic hallucinations, which are often fleeting and highly saturated, detached from the person hallucinating. In the case of hypnogogic hallucinations the person hallucination is more so a spectator while in hypnopompic hallucinations there is often a feeling of immersion in the hallucination.

## References

C. Shiel Jr., William (*Reviewed 12/11/2018*) "Medical Definition of Hypnopompic hallucination" *MedicineNet* Retrieved 25 May 2020.
Flavie Waters, Jan Dirk Blom, Thien Thanh Dang-Vu, Allan J. Cheyne, Ben Alderson-Day, Peter Woodruff, Daniel Collerton (29 June 2016) "What Is the Link Between Hallucinations, Dreams, and Hypnagogic–Hypnopompic Experiences?" *National Center for Biotechnology Information* Retrieved 25 May 2020.
"The Neurocritic" (21 December 2013) "When Waking Up Becomes the Nightmare: Hypnopompic Hallucinatory Pain" *The Neurocritic (Blogspot)* Retrieved 25 May 2020.
Knott, Lawrence (26 August 2015) "Hypnagogic Hallucinations" *Patient* Retrieved 25 May 2020.
5. ↑ Sacks, Oliver. (2012) *Hallucinations* (PDF Download) Retrieved 22 October 2021.

Dreams and Oneirology

**Dream Types:** Nightmare ☁ Shared Dream
**Dream Contents:** Dream Character ☁ Dream Guide ☁ Dream Sign ☁ Interobject
**States of Consciousness:** Hypnagogia ☁ Hypnopompic
**Perceptual Phenomena:** **Hypnopompic hallucination**
**Lucid Dreaming:** Custom Alarm Noise Wake Initiated Lucid Dream (CANWILD) ☁ Dream Exit Induced Lucid Dream (DEILD) ☁ Dream Initiated Lucid Dream (DILD) ☁ Finger Induced Lucid Dream (FILD) ☁ Induction Aid ☁ Induction Techniques ☁ Lucid Dream ☁ Lucid Dreaming: An Introduction (by Emanla Eraton) ☁ Lucid Induced Lucid Dream (LILD) ☁ Mnemonic Induction of Lucid Dreams (MILD) ☁ Visually Incubated Lucid Dream (VILD) ☁ Wake Initiated Lucid Dream (WILD)
**Websites:** Dream Views Forum ☁ LD4all ☁ LD4all Forum ☁ Lucidipedia ☁ The Lucidity Institute ☁ World of Lucid Dreaming

The Brain

**Macro Anatomy**
Cerebellum ☁ Frontal lobe ☁ Grey and White Matter ☁ Hippocampus ☁ Occipital lobe ☁ Parietal lobe ☁ Spinal cord ☁ Temporal lobe
**Micro Anatomy**
Neuron ☁ Neurotransmitters
**Behavior**
Brainwaves ☁ Dreams
**Misperceptive and Hallucinatory Phenomena**
Hypnogogic hallucination ☁ **Hypnopompic hallucination**
**Disorders**
Migraine