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After images: Difference between revisions

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During [[hallucinogen|hallucinogenic]] experiences, still overlayed images of moving objects are commonly left in place of where the object once was. This creates a series of overlayed images across one's visual field which become less distinct the further away they are from the moving object's current position. Another manifestation of this effect can be described as being able to see the external environment for several seconds after one closes their eyes before it gradually fades away.
During [[hallucinogen|hallucinogenic]] experiences, still overlayed images of moving objects are commonly left in place of where the object once was. This creates a series of overlayed images across one's visual field which become less distinct the further away they are from the moving object's current position. Another manifestation of this effect can be described as being able to see the external environment for several seconds after one closes their eyes before it gradually fades away.


After images are often accompanied by other coinciding effects such as [[tracers]]<ref name="Visual_Function_1988"/><ref name="Psych2002"/> and [[drifting]].<ref name="25B"/> They are most commonly induced under the influence of [[dosage#common|moderate]] [[dosage|dosages]] of [[psychedelic]] compounds, such as [[LSD]], [[psilocybin]], and [[mescaline]]. Visual trailing phenomena is associated with 5-HT2 receptor stimulation.<ref name="Psych2002"/><ref>Halberstadt, A. L. (2015). Recent advances in the neuropsychopharmacology of serotonergic hallucinogens. Behavioural brain research, 277, 99-120. https://dx.doi.org/10.1016%2Fj.bbr.2014.07.016</ref>
After images are often accompanied by other coinciding effects such as [[tracers]]<ref name="Visual_Function_1988"/><ref name="Psych2002"/> and [[drifting]].<ref name="25B"/> They are most commonly induced under the influence of [[dosage#common|moderate]] [[dosage|dosages]] of [[psychedelic]] compounds, such as [[LSD]], [[psilocybin]], and [[mescaline]]. Visual trailing phenomena is associated with 5-HT2 receptor stimulation.<ref name="Psych2002"/><ref>Halberstadt, A. L. (2015). Recent advances in the neuropsychopharmacology of serotonergic hallucinogens. Behavioural brain research, 277, 99-120. https://dx.doi.org/10.1016%2Fj.bbr.2014.07.016</ref><ref>Lauterbach, E., Abdelhamid, A., & Annandale, J. B. (2000). Posthallucinogen-like visual illusions (palinopsia) with risperidone in a patient without previous hallucinogen exposure: possible relation to serotonin 5HT2a receptor blockade. Pharmacopsychiatry, 33(01), 38-41.https://doi.org/10.1055/s-2000-8452</ref></onlyinclude>
<ref>Lauterbach, E., Abdelhamid, A., & Annandale, J. B. (2000). Posthallucinogen-like visual illusions (palinopsia) with risperidone in a patient without previous hallucinogen exposure: possible relation to serotonin 5HT2a receptor blockade. Pharmacopsychiatry, 33(01), 38-41.https://doi.org/10.1055/s-2000-8452</ref></onlyinclude>
===Psychoactive substances===
===Psychoactive substances===
Compounds within our [[psychoactive substance index]] which may cause this effect include:
Compounds within our [[psychoactive substance index]] which may cause this effect include:

Revision as of 16:20, 21 February 2018

{{#ev:gfycat|https://giant.gfycat.com/PepperyMedicalAfghanhound.webm%7C400x225%7Cright%7CAfter images by StingrayZ - This image serves as an accurate portrayal of the commonly experienced psychedelic effect known as after images. There is also a significant amount of visual drifting within its background.|frame}} After images are a visual distortion that can be described as an image continuing to appear in one's vision after exposure to the original image has ceased.[1][2][3][4][5][6][7][8] A common form of after image is the bright glow that seems to float in one's vision after looking into a light source for a few seconds. This effect is similar to tracers, but differs in that it does not create smooth blurs behind moving objects.

During hallucinogenic experiences, still overlayed images of moving objects are commonly left in place of where the object once was. This creates a series of overlayed images across one's visual field which become less distinct the further away they are from the moving object's current position. Another manifestation of this effect can be described as being able to see the external environment for several seconds after one closes their eyes before it gradually fades away.

After images are often accompanied by other coinciding effects such as tracers[2][4] and drifting.[8] They are most commonly induced under the influence of moderate dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline. Visual trailing phenomena is associated with 5-HT2 receptor stimulation.[4][9][10]

Psychoactive substances

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

... further results

Experience reports

Anecdotal reports which describe this effect within our experience index include:

See also

References

  1. ↑ Kawasaki, A., & Purvin, V. (1996). Persistent palinopsia following ingestion of lysergic acid diethylamide (LSD). Archives of Ophthalmology, 114(1), 47-50. https://doi.org/10.1001/archopht.1996.01100130045007
  2. ↑ 2.0 2.1 Abraham, H. D., & Wolf, E. (1988). Visual function in past users of LSD: Psychophysical findings. Journal of Abnormal Psychology, 97(4), 443. http://psycnet.apa.org/doi/10.1037/0021-843X.97.4.443
  3. ↑ Abraham HD. Hallucinogen-related disorders. In: Sadock BJ, Sadock VA, eds. Kaplan and Sadock’s comprehensive textbook of psychiatry, seventh edition. Philadelphia: Lippincott, Williams, & Wilkins, 2000:1015–1024.
  4. ↑ 4.0 4.1 4.2 Abraham, H. D., Mccann, U. D., & Ricaurte, G. A. (2002). Psychedelic drugs. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.623.299
  5. ↑ Bressloff, P. C., Cowan, J. D., Golubitsky, M., Thomas, P. J., & Wiener, M. C. (2001). Geometric visual hallucinations, Euclidean symmetry and the functional architecture of striate cortex. Philosophical Transactions of the Royal Society of London B: Biological Sciences, 356(1407), 300. https://doi.org/10.1098/rstb.2000.0769
  6. ↑ Kluver, H. 1966 Mescal and mechanisms and hallucinations. University of Chicago Press.
  7. ↑ Kleinman, J. E., Gillin, J. C., & Wyatt, R. J. (1977). A comparison of the phenomenology of hallucinogens and schizophrenia from some autobiographical accounts. Schizophrenia Bulletin, 3(4), 562. https://dx.doi.org/10.1093/schbul/3.4.560
  8. ↑ 8.0 8.1 Papoutsis, I., Nikolaou, P., Stefanidou, M., Spiliopoulou, C., & Athanaselis, S. (2015). 25B-NBOMe and its precursor 2C-B: modern trends and hidden dangers. Forensic Toxicology, 33(1), 1-11. https://doi.org/10.1007/s11419-014-0242-9
  9. ↑ Halberstadt, A. L. (2015). Recent advances in the neuropsychopharmacology of serotonergic hallucinogens. Behavioural brain research, 277, 99-120. https://dx.doi.org/10.1016%2Fj.bbr.2014.07.016
  10. ↑ Lauterbach, E., Abdelhamid, A., & Annandale, J. B. (2000). Posthallucinogen-like visual illusions (palinopsia) with risperidone in a patient without previous hallucinogen exposure: possible relation to serotonin 5HT2a receptor blockade. Pharmacopsychiatry, 33(01), 38-41.https://doi.org/10.1055/s-2000-8452
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