Optical illusion (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Optical illusion" in English language version.

Last modified: 06:09:56, 16 August 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

2818doi.org

2^nd place

2718nih.gov

5^th place

2212semanticscholar.org

15^th place

8^th place

1513web.archive.org

1^st place

71invibe.net

low place

44adsabs.harvard.edu

14^th place

9^th place

42sciencedirect.com

137^th place

146^th place

42worldcat.org

4^th place

33books.google.com

3^rd place

32hdl.handle.net

66^th place

34^th place

22sagepub.com

609^th place

451^st place

21livescience.com

1,726^th place

1,417^th place

21uptodate.com

4,645^th place

3,353^rd place

21nasa.gov

12^th place

73^rd place

11ubi.pt

low place

11worqx.com

low place

11perceptionweb.com

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11msn.com

188^th place

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11apa.org

1,327^th place

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11acm.org

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11arxiv.org

49^th place

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11osf.io

8,809^th place

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11bu.edu

2,348^th place

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11psu.edu

299^th place

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11michaelbach.de

low place

11foxnews.com

262^nd place

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11go.com

97^th place

79^th place

11wolfram.com

1,091^st place

1,169^th place

11cnbc.com

303^rd place

191^st place

11straitstimes.com

461^st place

263^rd place

11richardgregory.org

low place

11krammerbuch.at

low place

11mq.edu.au

9,777^th place

6,068^th place

acm.org (Global: 1,200^th place; English: 821^st place)

portal.acm.org

Yoon Mo Jung and Jackie (Jianhong) Shen (2008), J. Visual Comm. Image Representation, 19(1):42–55, First-order modeling and stability analysis of illusory contours.

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

ui.adsabs.harvard.edu

Howe, Catherine Q.; Yang, Zhiyong; Purves, Dale (2005). "The Poggendorff illusion explained by natural scene geometry". PNAS. 102 (21): 7707–7712. Bibcode:2005PNAS..102.7707H. doi:10.1073/pnas.0502893102. PMC 1093311. PMID 15888555.
Gregory, R. L. (1972). "Cognitive Contours". Nature. 238 (5358): 51–52. Bibcode:1972Natur.238...51G. doi:10.1038/238051a0. PMID 12635278. S2CID 4285883. Retrieved September 4, 2021.
Gregory, Richard L. (1997). "Knowledge in perception and illusion" (PDF). Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 352 (1358): 1121–7. Bibcode:1997RSPTB.352.1121G. doi:10.1098/rstb.1997.0095. PMC 1692018. PMID 9304679. Archived (PDF) from the original on April 4, 2005.
Pinna, Baingio (2009). "Pinna illusion". Scholarpedia. 4 (2): 6656. Bibcode:2009SchpJ...4.6656P. doi:10.4249/scholarpedia.6656.

apa.org (Global: 1,327^th place; English: 1,093^rd place)

dictionary.apa.org

"APA Dictionary of Psychology: Gestalt Psychology". American Psychological Association. Retrieved March 27, 2026.

arxiv.org (Global: 49^th place; English: 31^st place)

Yoon Mo Jung and Jackie (Jianhong) Shen (2014), arXiv:1406.1265, Illusory shapes via phase transition Archived 2017-11-24 at the Wayback Machine.

books.google.com (Global: 3^rd place; English: 3^rd place)

David Eagleman (April 2012). Incogito: The Secret Lives of the Brain. Vintage Books. pp. 33–. ISBN 978-0-307-38992-3. Archived from the original on October 12, 2013. Retrieved August 14, 2013.
Petry, Susan; Meyer, Glenn E. (December 6, 2012). The Perception of Illusory Contours. Springer; 1987th edition. p. 696. ISBN 9781461247609.
Seckel, Al (2017). Masters of Deception: Escher, Dalí & the Artists of Optical Illusion. Sterling. p. 320. ISBN 9781402705779.

bu.edu (Global: 2,348^th place; English: 1,348^th place)

cns-web.bu.edu

Tanca, M.; Grossberg, S.; Pinna, B. (2010). "Probing Perceptual Antinomies with the Watercolor Illusion and Explaining How the Brain Resolves Them" (PDF). Seeing & Perceiving. 23 (4): 295–333. CiteSeerX 10.1.1.174.7709. doi:10.1163/187847510x532685. PMID 21466146. Archived (PDF) from the original on September 21, 2017. {{cite journal}}: Cite uses deprecated parameter |citeseerx= (help)

cnbc.com (Global: 303^rd place; English: 191^st place)

"3-D museums: Next big thing for Asia tourism?". CNBC. August 28, 2014.

doi.org (Global: 2^nd place; English: 2^nd place)

Gregory, Richard (1991). "Putting illusions in their place". Perception. 20 (1): 1–4. doi:10.1068/p200001. PMID 1945728. S2CID 5521054.
Gregory, Richard L. (1997). "Visual illusions classified" (PDF). Trends in Cognitive Sciences. 1 (5): 190–194. doi:10.1016/s1364-6613(97)01060-7. PMID 21223901. S2CID 42228451.
Schiller, Peter H.; Carvey, Christina E. (2005). "The Hermann grid illusion revisited". Perception. 34 (11): 1375–1397. doi:10.1068/p5447. PMID 16355743. S2CID 15740144. Archived from the original on December 12, 2011. Retrieved October 3, 2011.
Geier J, Bernáth L, Hudák M, Séra L (2008). "Straightness as the main factor of the Hermann grid illusion". Perception. 37 (5): 651–665. doi:10.1068/p5622. PMID 18605141. S2CID 21028439.
Bach, Michael (2008). "Die Hermann-Gitter-Täuschung: Lehrbucherklärung widerlegt (The Hermann grid illusion: the classic textbook interpretation is obsolete)". Ophthalmologe. 106 (10): 913–917. doi:10.1007/s00347-008-1845-5. PMID 18830602. S2CID 1573891.
Howe, Catherine Q.; Yang, Zhiyong; Purves, Dale (2005). "The Poggendorff illusion explained by natural scene geometry". PNAS. 102 (21): 7707–7712. Bibcode:2005PNAS..102.7707H. doi:10.1073/pnas.0502893102. PMC 1093311. PMID 15888555.
Gregory, R. L. (1972). "Cognitive Contours". Nature. 238 (5358): 51–52. Bibcode:1972Natur.238...51G. doi:10.1038/238051a0. PMID 12635278. S2CID 4285883. Retrieved September 4, 2021.
Bressan, P (2006). "The Place of White in a World of Grays: A Double-Anchoring Theory of Lightness Perception". Psychological Review. 113 (3): 526–553. doi:10.1037/0033-295x.113.3.526. hdl:11577/1560501. PMID 16802880.
Tanca, M.; Grossberg, S.; Pinna, B. (2010). "Probing Perceptual Antinomies with the Watercolor Illusion and Explaining How the Brain Resolves Them" (PDF). Seeing & Perceiving. 23 (4): 295–333. CiteSeerX 10.1.1.174.7709. doi:10.1163/187847510x532685. PMID 21466146. Archived (PDF) from the original on September 21, 2017. {{cite journal}}: Cite uses deprecated parameter |citeseerx= (help)
Gersztenkorn, D; Lee, AG (July 2, 2014). "Palinopsia revamped: A systematic review of the literature". Survey of Ophthalmology. 60 (1): 1–35. doi:10.1016/j.survophthal.2014.06.003. PMID 25113609.
Dima, Danai; Roiser, Jonathan P.; Dietrich, Detlef E.; Bonnemann, Catharina; Lanfermann, Heinrich; Emrich, Hinderk M.; Dillo, Wolfgang (July 15, 2009). "Understanding why patients with schizophrenia do not perceive the hollow-mask illusion using dynamic causal modelling". NeuroImage. 46 (4): 1180–1186. doi:10.1016/j.neuroimage.2009.03.033. ISSN 1053-8119. PMID 19327402. S2CID 10008080.
Tschacher, Wolfgang; Schuler, Daniela; Junghan, Ulrich (January 31, 2006). "Reduced perception of the motion-induced blindness illusion in schizophrenia". Schizophrenia Research. 81 (2): 261–267. doi:10.1016/j.schres.2005.08.012. ISSN 0920-9964. PMID 16243490. S2CID 10752733.
Gregory, Richard L. (1997). "Knowledge in perception and illusion" (PDF). Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 352 (1358): 1121–7. Bibcode:1997RSPTB.352.1121G. doi:10.1098/rstb.1997.0095. PMC 1692018. PMID 9304679. Archived (PDF) from the original on April 4, 2005.
Sweet, Barbara; Kaiser, Mary (August 2011). "Depth Perception, Cueing, and Control" (PDF). AIAA Modeling and Simulation Technologies Conference. NASA Ames Research Center. doi:10.2514/6.2011-6424. hdl:2060/20180007277. ISBN 978-1-62410-154-0. S2CID 16425060 – via American Institute of Aeronautics and Astronautics.{{cite journal}}: CS1 maint: periodical has ISBN (link)
Bangio Pinna; Gavin Brelstaff; Lothar Spillman (2001). "Surface color from boundaries: a new watercolor illusion". Vision Research. 41 (20): 2669–2676. doi:10.1016/s0042-6989(01)00105-5. PMID 11520512. S2CID 16534759.
Pinna, B.; Gregory, R.L.; Spillmann, L. (2002). "Shifts of Edges and Deformations of Patterns". Perception. 31 (12): 1503–1508. doi:10.1068/p3112pp. PMID 12916675. S2CID 220053062.
Pinna, Baingio (2009). "Pinna illusion". Scholarpedia. 4 (2): 6656. Bibcode:2009SchpJ...4.6656P. doi:10.4249/scholarpedia.6656.
Baingio Pinna; Gavin J. Brelstaff (2000). "A new visual illusion of relative motion" (PDF). Vision Research. 40 (16): 2091–2096. doi:10.1016/S0042-6989(00)00072-9. PMID 10878270. S2CID 11034983. Archived (PDF) from the original on October 5, 2013.

foxnews.com (Global: 262^nd place; English: 171^st place)

Bryner, Jeanna. "Scientist: Humans Can See Into Future". Fox News. Archived from the original on September 16, 2016. Retrieved July 13, 2018.

go.com (Global: 97^th place; English: 79^th place)

abcnews.go.com

NIERENBERG, CARI (February 7, 2008). "Optical Illusions: When Your Brain Can't Believe Your Eyes". ABC News. Retrieved July 13, 2018.

hdl.handle.net (Global: 66^th place; English: 34^th place)

Bressan, P (2006). "The Place of White in a World of Grays: A Double-Anchoring Theory of Lightness Perception". Psychological Review. 113 (3): 526–553. doi:10.1037/0033-295x.113.3.526. hdl:11577/1560501. PMID 16802880.
Sweet, Barbara; Kaiser, Mary (August 2011). "Depth Perception, Cueing, and Control" (PDF). AIAA Modeling and Simulation Technologies Conference. NASA Ames Research Center. doi:10.2514/6.2011-6424. hdl:2060/20180007277. ISBN 978-1-62410-154-0. S2CID 16425060 – via American Institute of Aeronautics and Astronautics.{{cite journal}}: CS1 maint: periodical has ISBN (link)

invibe.net (Global: low place; English: low place)

Gregory, Richard L. (1997). "Visual illusions classified" (PDF). Trends in Cognitive Sciences. 1 (5): 190–194. doi:10.1016/s1364-6613(97)01060-7. PMID 21223901. S2CID 42228451.

krammerbuch.at (Global: low place; English: low place)

gth.krammerbuch.at

Stephen Grossberg; Baingio Pinna (2012). "Neural Dynamics of Gestalt Principles of Perceptual Organization: From Grouping to Shape and Meaning" (PDF). Gestalt Theory. 34 (3+4): 399–482. Archived from the original (PDF) on October 4, 2013. Retrieved July 14, 2013.

livescience.com (Global: 1,726^th place; English: 1,417^th place)

"Key to All-Optical Illusions Discovered" Archived 2008-09-05 at the Wayback Machine, Jeanna Bryner, Senior Writer, LiveScience.com 6/2/08. His research on this topic is detailed in the May/June 2008 issue of the journal Cognitive Science.

michaelbach.de (Global: low place; English: low place)

Bach, Michael (January 4, 2010) [16 August 2004]. "Shepard's "Turning the Tables"". michaelbach.de. Michael Bach. Archived from the original on December 27, 2009. Retrieved January 27, 2010.

mq.edu.au (Global: 9,777^th place; English: 6,068^th place)

psy.mq.edu.au

Baingio Pinna; Gavin J. Brelstaff (2000). "A new visual illusion of relative motion" (PDF). Vision Research. 40 (16): 2091–2096. doi:10.1016/S0042-6989(00)00072-9. PMID 10878270. S2CID 11034983. Archived (PDF) from the original on October 5, 2013.

msn.com (Global: 188^th place; English: 215^th place)

Gili Malinsky (July 22, 2019). "An optical illusion that seems to be both a circle and a square is baffling the internet — here's how it works". Insider.

nasa.gov (Global: 12^th place; English: 73^rd place)

human-factors.arc.nasa.gov

Sweet, Barbara; Kaiser, Mary (August 2011). "Depth Perception, Cueing, and Control" (PDF). AIAA Modeling and Simulation Technologies Conference. NASA Ames Research Center. doi:10.2514/6.2011-6424. hdl:2060/20180007277. ISBN 978-1-62410-154-0. S2CID 16425060 – via American Institute of Aeronautics and Astronautics.{{cite journal}}: CS1 maint: periodical has ISBN (link)

nih.gov (Global: 5^th place; English: 5^th place)

pubmed.ncbi.nlm.nih.gov

Gregory, Richard (1991). "Putting illusions in their place". Perception. 20 (1): 1–4. doi:10.1068/p200001. PMID 1945728. S2CID 5521054.
Gregory, Richard L. (1997). "Visual illusions classified" (PDF). Trends in Cognitive Sciences. 1 (5): 190–194. doi:10.1016/s1364-6613(97)01060-7. PMID 21223901. S2CID 42228451.
Schiller, Peter H.; Carvey, Christina E. (2005). "The Hermann grid illusion revisited". Perception. 34 (11): 1375–1397. doi:10.1068/p5447. PMID 16355743. S2CID 15740144. Archived from the original on December 12, 2011. Retrieved October 3, 2011.
Geier J, Bernáth L, Hudák M, Séra L (2008). "Straightness as the main factor of the Hermann grid illusion". Perception. 37 (5): 651–665. doi:10.1068/p5622. PMID 18605141. S2CID 21028439.
Bach, Michael (2008). "Die Hermann-Gitter-Täuschung: Lehrbucherklärung widerlegt (The Hermann grid illusion: the classic textbook interpretation is obsolete)". Ophthalmologe. 106 (10): 913–917. doi:10.1007/s00347-008-1845-5. PMID 18830602. S2CID 1573891.
Howe, Catherine Q.; Yang, Zhiyong; Purves, Dale (2005). "The Poggendorff illusion explained by natural scene geometry". PNAS. 102 (21): 7707–7712. Bibcode:2005PNAS..102.7707H. doi:10.1073/pnas.0502893102. PMC 1093311. PMID 15888555.
Gregory, R. L. (1972). "Cognitive Contours". Nature. 238 (5358): 51–52. Bibcode:1972Natur.238...51G. doi:10.1038/238051a0. PMID 12635278. S2CID 4285883. Retrieved September 4, 2021.
Bressan, P (2006). "The Place of White in a World of Grays: A Double-Anchoring Theory of Lightness Perception". Psychological Review. 113 (3): 526–553. doi:10.1037/0033-295x.113.3.526. hdl:11577/1560501. PMID 16802880.
Tanca, M.; Grossberg, S.; Pinna, B. (2010). "Probing Perceptual Antinomies with the Watercolor Illusion and Explaining How the Brain Resolves Them" (PDF). Seeing & Perceiving. 23 (4): 295–333. CiteSeerX 10.1.1.174.7709. doi:10.1163/187847510x532685. PMID 21466146. Archived (PDF) from the original on September 21, 2017. {{cite journal}}: Cite uses deprecated parameter |citeseerx= (help)
Gersztenkorn, D; Lee, AG (July 2, 2014). "Palinopsia revamped: A systematic review of the literature". Survey of Ophthalmology. 60 (1): 1–35. doi:10.1016/j.survophthal.2014.06.003. PMID 25113609.
Dima, Danai; Roiser, Jonathan P.; Dietrich, Detlef E.; Bonnemann, Catharina; Lanfermann, Heinrich; Emrich, Hinderk M.; Dillo, Wolfgang (July 15, 2009). "Understanding why patients with schizophrenia do not perceive the hollow-mask illusion using dynamic causal modelling". NeuroImage. 46 (4): 1180–1186. doi:10.1016/j.neuroimage.2009.03.033. ISSN 1053-8119. PMID 19327402. S2CID 10008080.
Tschacher, Wolfgang; Schuler, Daniela; Junghan, Ulrich (January 31, 2006). "Reduced perception of the motion-induced blindness illusion in schizophrenia". Schizophrenia Research. 81 (2): 261–267. doi:10.1016/j.schres.2005.08.012. ISSN 0920-9964. PMID 16243490. S2CID 10752733.
Gregory, Richard L. (1997). "Knowledge in perception and illusion" (PDF). Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 352 (1358): 1121–7. Bibcode:1997RSPTB.352.1121G. doi:10.1098/rstb.1997.0095. PMC 1692018. PMID 9304679. Archived (PDF) from the original on April 4, 2005.
Bangio Pinna; Gavin Brelstaff; Lothar Spillman (2001). "Surface color from boundaries: a new watercolor illusion". Vision Research. 41 (20): 2669–2676. doi:10.1016/s0042-6989(01)00105-5. PMID 11520512. S2CID 16534759.
Pinna, B.; Gregory, R.L.; Spillmann, L. (2002). "Shifts of Edges and Deformations of Patterns". Perception. 31 (12): 1503–1508. doi:10.1068/p3112pp. PMID 12916675. S2CID 220053062.
Baingio Pinna; Gavin J. Brelstaff (2000). "A new visual illusion of relative motion" (PDF). Vision Research. 40 (16): 2091–2096. doi:10.1016/S0042-6989(00)00072-9. PMID 10878270. S2CID 11034983. Archived (PDF) from the original on October 5, 2013.

ncbi.nlm.nih.gov

Howe, Catherine Q.; Yang, Zhiyong; Purves, Dale (2005). "The Poggendorff illusion explained by natural scene geometry". PNAS. 102 (21): 7707–7712. Bibcode:2005PNAS..102.7707H. doi:10.1073/pnas.0502893102. PMC 1093311. PMID 15888555.
Gregory, Richard L. (1997). "Knowledge in perception and illusion" (PDF). Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 352 (1358): 1121–7. Bibcode:1997RSPTB.352.1121G. doi:10.1098/rstb.1997.0095. PMC 1692018. PMID 9304679. Archived (PDF) from the original on April 4, 2005.

osf.io (Global: 8,809^th place; English: 5,705^th place)

Bressan, P (2006). "The Place of White in a World of Grays: A Double-Anchoring Theory of Lightness Perception". Psychological Review. 113 (3): 526–553. doi:10.1037/0033-295x.113.3.526. hdl:11577/1560501. PMID 16802880.

perceptionweb.com (Global: low place; English: low place)

Schiller, Peter H.; Carvey, Christina E. (2005). "The Hermann grid illusion revisited". Perception. 34 (11): 1375–1397. doi:10.1068/p5447. PMID 16355743. S2CID 15740144. Archived from the original on December 12, 2011. Retrieved October 3, 2011.

psu.edu (Global: 299^th place; English: 159^th place)

citeseerx.ist.psu.edu

Tanca, M.; Grossberg, S.; Pinna, B. (2010). "Probing Perceptual Antinomies with the Watercolor Illusion and Explaining How the Brain Resolves Them" (PDF). Seeing & Perceiving. 23 (4): 295–333. CiteSeerX 10.1.1.174.7709. doi:10.1163/187847510x532685. PMID 21466146. Archived (PDF) from the original on September 21, 2017. {{cite journal}}: Cite uses deprecated parameter |citeseerx= (help)

richardgregory.org (Global: low place; English: low place)

Gregory, Richard L. (1997). "Knowledge in perception and illusion" (PDF). Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 352 (1358): 1121–7. Bibcode:1997RSPTB.352.1121G. doi:10.1098/rstb.1997.0095. PMC 1692018. PMID 9304679. Archived (PDF) from the original on April 4, 2005.

sagepub.com (Global: 609^th place; English: 451^st place)

uk.sagepub.com

In the scientific literature the term "visual illusion" is preferred because the older term gives rise to the assumption that the optics of the eye were the general cause for illusions (which is only the case for so-called physical illusions). "Optical" in the term derives from the Greek optein = "seeing", so the term refers to an "illusion of seeing", not to optics as a branch of modern physics. A regular scientific source for illusions are the journals Perception and i-Perception

journals.sagepub.com

In the scientific literature the term "visual illusion" is preferred because the older term gives rise to the assumption that the optics of the eye were the general cause for illusions (which is only the case for so-called physical illusions). "Optical" in the term derives from the Greek optein = "seeing", so the term refers to an "illusion of seeing", not to optics as a branch of modern physics. A regular scientific source for illusions are the journals Perception and i-Perception

sciencedirect.com (Global: 137^th place; English: 146^th place)

Dima, Danai; Roiser, Jonathan P.; Dietrich, Detlef E.; Bonnemann, Catharina; Lanfermann, Heinrich; Emrich, Hinderk M.; Dillo, Wolfgang (July 15, 2009). "Understanding why patients with schizophrenia do not perceive the hollow-mask illusion using dynamic causal modelling". NeuroImage. 46 (4): 1180–1186. doi:10.1016/j.neuroimage.2009.03.033. ISSN 1053-8119. PMID 19327402. S2CID 10008080.
Tschacher, Wolfgang; Schuler, Daniela; Junghan, Ulrich (January 31, 2006). "Reduced perception of the motion-induced blindness illusion in schizophrenia". Schizophrenia Research. 81 (2): 261–267. doi:10.1016/j.schres.2005.08.012. ISSN 0920-9964. PMID 16243490. S2CID 10752733.

semanticscholar.org (Global: 15^th place; English: 8^th place)

api.semanticscholar.org

Gregory, Richard (1991). "Putting illusions in their place". Perception. 20 (1): 1–4. doi:10.1068/p200001. PMID 1945728. S2CID 5521054.
Gregory, Richard L. (1997). "Visual illusions classified" (PDF). Trends in Cognitive Sciences. 1 (5): 190–194. doi:10.1016/s1364-6613(97)01060-7. PMID 21223901. S2CID 42228451.
Schiller, Peter H.; Carvey, Christina E. (2005). "The Hermann grid illusion revisited". Perception. 34 (11): 1375–1397. doi:10.1068/p5447. PMID 16355743. S2CID 15740144. Archived from the original on December 12, 2011. Retrieved October 3, 2011.
Geier J, Bernáth L, Hudák M, Séra L (2008). "Straightness as the main factor of the Hermann grid illusion". Perception. 37 (5): 651–665. doi:10.1068/p5622. PMID 18605141. S2CID 21028439.
Bach, Michael (2008). "Die Hermann-Gitter-Täuschung: Lehrbucherklärung widerlegt (The Hermann grid illusion: the classic textbook interpretation is obsolete)". Ophthalmologe. 106 (10): 913–917. doi:10.1007/s00347-008-1845-5. PMID 18830602. S2CID 1573891.
Gregory, R. L. (1972). "Cognitive Contours". Nature. 238 (5358): 51–52. Bibcode:1972Natur.238...51G. doi:10.1038/238051a0. PMID 12635278. S2CID 4285883. Retrieved September 4, 2021.
Dima, Danai; Roiser, Jonathan P.; Dietrich, Detlef E.; Bonnemann, Catharina; Lanfermann, Heinrich; Emrich, Hinderk M.; Dillo, Wolfgang (July 15, 2009). "Understanding why patients with schizophrenia do not perceive the hollow-mask illusion using dynamic causal modelling". NeuroImage. 46 (4): 1180–1186. doi:10.1016/j.neuroimage.2009.03.033. ISSN 1053-8119. PMID 19327402. S2CID 10008080.
Tschacher, Wolfgang; Schuler, Daniela; Junghan, Ulrich (January 31, 2006). "Reduced perception of the motion-induced blindness illusion in schizophrenia". Schizophrenia Research. 81 (2): 261–267. doi:10.1016/j.schres.2005.08.012. ISSN 0920-9964. PMID 16243490. S2CID 10752733.
Sweet, Barbara; Kaiser, Mary (August 2011). "Depth Perception, Cueing, and Control" (PDF). AIAA Modeling and Simulation Technologies Conference. NASA Ames Research Center. doi:10.2514/6.2011-6424. hdl:2060/20180007277. ISBN 978-1-62410-154-0. S2CID 16425060 – via American Institute of Aeronautics and Astronautics.{{cite journal}}: CS1 maint: periodical has ISBN (link)
Bangio Pinna; Gavin Brelstaff; Lothar Spillman (2001). "Surface color from boundaries: a new watercolor illusion". Vision Research. 41 (20): 2669–2676. doi:10.1016/s0042-6989(01)00105-5. PMID 11520512. S2CID 16534759.
Pinna, B.; Gregory, R.L.; Spillmann, L. (2002). "Shifts of Edges and Deformations of Patterns". Perception. 31 (12): 1503–1508. doi:10.1068/p3112pp. PMID 12916675. S2CID 220053062.
Baingio Pinna; Gavin J. Brelstaff (2000). "A new visual illusion of relative motion" (PDF). Vision Research. 40 (16): 2091–2096. doi:10.1016/S0042-6989(00)00072-9. PMID 10878270. S2CID 11034983. Archived (PDF) from the original on October 5, 2013.

straitstimes.com (Global: 461^st place; English: 263^rd place)

Seow, Bei Yi (June 13, 2014). "3-D art wows visitors | the Straits Times". The Straits Times.

ubi.pt (Global: low place; English: low place)

dfisica.ubi.pt

Bach, Michael; Poloschek, C. M. (2006). "Optical Illusions" (PDF). Adv. Clin. Neurosci. Rehabil. 6 (2): 20–21. Archived from the original (PDF) on January 20, 2021. Retrieved December 29, 2017.

uptodate.com (Global: 4,645^th place; English: 3,353^rd place)

Pelak, Victoria. "Approach to the patient with visual hallucinations". www.uptodate.com. Archived from the original on August 26, 2014. Retrieved August 25, 2014.

web.archive.org (Global: 1^st place; English: 1^st place)

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