Symmetrical texture repetition

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Grass by Chelsea Morgan - This image serves as accurate portrayal of the commonly experienced psychedelic effect known as Symmetrical texture repetition.

Symmetrical texture repetition is defined as the perception of textures becoming mirrored repeatedly over their own surface in an intricate and symmetrical fashion that is consistent across itself. This maintains the same level of detail no matter how closely one attempts to look at the distortion and tends to remain most prominent within one's peripheral vision. It usually manifests itself in rough textures such as grass, carpets, tree bark, and asphalt.

During this state, if one stares at a fixed point the symmetrical texture repetition may progressively increase and further tesselate into more complex forms. However, this progression of complexity will usually reset back to baseline as soon as one double takes.

Symmetrical texture repetition is often accompanied by other coinciding effects such as pattern recognition enhancement[1][2] and transformations in a manner which can result in the appearance of a huge array of abstract forms and imagery embedded within the symmetry. It is most commonly induced under the influence of mild dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline. However, it can also occur less commonly under the influence of certain stimulants and dissociatives, such as MDMA or 3-MeO-PCP.


This animation serves as a demonstration of how symmetrical texture repetition can be accurately reproduced by simply symmetrically mirroring rough textures across themselves.

It is worth noting that to accurately replicate the appearance of this effect through the use of image editing software, all one needs to do is simply mirror a texture across itself in a symmetrical manner. This may suggest that a similar process is occurring within the brain, perhaps by filling in missing details by taking visual data from within one's central line of sight and mirroring it across the peripheral in a manner which results in a symmetrical tessellation of the texture.

Image examples

Leaves by Chelsea Morgan.jpgLeaves by Chelsea Morgan
Paradise island by Xanny.jpgParadise island by Subsentience
Grass by Chelsea Morgan.jpgGrass by Chelsea Morgan
Asphalt by Chelsea Morgan.jpgAsphalt by Chelsea Morgan
Grass on 2cb by inifinity.jpgGrass on 2C-B by Infinity
Flower Bush by Chelsea Morgan.JPGFlower bush by Chelsea Morgan
Symmetry on treebark.jpgSymmetry on tree bark by Josikins
Ice by Chelsea Morgan.jpgIce by Chelsea Morgan
Gravel by Chelsea Morgan.jpgGravel by Chelsea Morgan
Stones by Chelsea Morgan.jpgStones by Chelsea Morgan
Symmetrical carpet repetition by Xanny.jpegSymmetrical carpet repetition by Subsentience
Symmetric pattern drifting.gifSymmetric drifting patterns by Anonymous
150ug-ish outside by timedilation.jpg150ug-ish outside by timedilation
Bathroom Rug by Chelsea Morgan.jpgBathroom Rug by Chelsea Morgan

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

External links


  1. Papoutsis, Ioannis; Nikolaou, Panagiota; Stefanidou, Maria; Spiliopoulou, Chara; Athanaselis, Sotiris (2014). "25B-NBOMe and its precursor 2C-B: modern trends and hidden dangers". Forensic Toxicology. 33 (1): 1–11. doi:10.1007/s11419-014-0242-9. ISSN 1860-8965. 
  2. Bersani, Francesco Saverio; Corazza, Ornella; Albano, Gabriella; Valeriani, Giuseppe; Santacroce, Rita; Bolzan Mariotti Posocco, Flaminia; Cinosi, Eduardo; Simonato, Pierluigi; Martinotti, Giovanni; Bersani, Giuseppe; Schifano, Fabrizio (2014). "25C-NBOMe: Preliminary Data on Pharmacology, Psychoactive Effects, and Toxicity of a New Potent and Dangerous Hallucinogenic Drug". BioMed Research International. 2014: 1–6. doi:10.1155/2014/734749. ISSN 2314-6133.