Dream suppression

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Dream suppression is defined as a decrease in the vividness, intensity, frequency, and recollection of a person's dreams. At its lower levels, this can be a partial suppression which results in the person having dreams of a lesser intensity and a lower rate of frequency. However, at its higher levels, this can be a complete suppression which results in the person not experiencing any dreams at all.

Dream suppression is most commonly induced under the influence of moderate dosages of cannabinoids[1] and most types of antidepressants[2][3][4]. This is due to the way in which they increase REM latency, decrease REM sleep, reduce total sleep time and efficiency, and increase wakefulness.[1][2][3][5] REM sleep is where the majority of dreams occur.[6]

Psychoactive substances

Compounds within our psychoactive substance index which may cause this effect include:

Experience reports

Annectdotal reports which describe this effect with our experience index include:

See also

External links


  1. 1.0 1.1 Schierenbeck, Thomas; Riemann, Dieter; Berger, Mathias; Hornyak, Magdolna (2008). "Effect of illicit recreational drugs upon sleep: Cocaine, ecstasy and marijuana". Sleep Medicine Reviews. 12 (5): 381–389. doi:10.1016/j.smrv.2007.12.004. ISSN 1087-0792. 
  2. 2.0 2.1 Sharpley, Ann L.; Cowen, Philip J. (1995). "Effect of pharmacologic treatments on the sleep of depressed patients". Biological Psychiatry. 37 (2): 85–98. doi:10.1016/0006-3223(94)00135-P. ISSN 0006-3223. 
  3. 3.0 3.1 Trivedi, M (1999). "Effects of Fluoxetine on the Polysomnogram in Outpatients with Major Depression". Neuropsychopharmacology. 20 (5): 447–459. doi:10.1016/S0893-133X(98)00131-6. ISSN 0893-133X. 
  4. Vogel, G.W.; Buffenstein, A.; Minter, K.; Hennessey, Ann (1990). "Drug effects on REM sleep and on endogenous depression". Neuroscience & Biobehavioral Reviews. 14 (1): 49–63. doi:10.1016/S0149-7634(05)80159-9. ISSN 0149-7634. 
  5. Feinberg, I., Jones, R., Walker, J. M., Cavness, C., & March, J. (1975). Effects of high dosage delta‐9‐tetrahydrocannabinol on sleep patterns in man. Clinical Pharmacology & Therapeutics, 17(4), 458-466. https://www.ncbi.nlm.nih.gov/pubmed/164314
  6. Hobson, J. A., Stickgold, R., & Pace-Schott, E. F. (1998). The neuropsychology of REM sleep dreaming. Neuroreport, 9(3), R1-R14. https://www.ncbi.nlm.nih.gov/pubmed/9512371