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Our article has been published:   
Geier J, Bernáth L, Hudák M, Séra L, 2008, " Straightness as the main factor of the Hermann grid illusion" Perception 37(5) 651 – 665  https://journals.sagepub.com/doi/10.1068/p5622

Local addendum to the article:   addendum

1   First publication of the Sinusoid and other curved grids:

            Nyolcadik Magyar Látás Szimpózium, Szeged   (2001,szeptember 8)

            English translation of the first publication: Szeged, Hungary, 2001-09-08

            Images in the symposium in 2001 / A 2001-ben bemutatott képek

International breakthrough :

            ECVP2004, Budapest, abstract  (abstract submission deadline: 9 March,2004)

            ECVP2004,Budapest, conference, photos

Anti-illusion in the illusion contest: Best Visual Illusions of the year   (ECVP2005, La Coruna)

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Stopping the Hermann grid illusion by sine distortion

The usually accepted Baumgartner (or "DOG", or Mexican Hut") model cannot explain this phenomenon

The essence of Baumgartner's hypothesis is that a relative increase in lateral inhibition in the receptive fields is a sufficient condition for the perception of illusory spots; this model does not require any further conditions.

The stimuli to the signed receptive fields on the left and right sides are pairwise equivalent.

So, if Baumgartner's hypothesis were correct, illusory spots would also appear in the sinusoidal grating - but this is not the case.

Stopping the scintillation

Curving the streets makes both Hermann spots and scintillation vanish. This fact suggests a common neuronal mechanism behind the Hermann grid illusion and the Scintillating grid illusion, whose investigation is a task of the future.

Conferences:

• My first publication about the distorted Hermann's grids: Nyolcadik Magyar Látás Szimpózium, Szeged, Hungary, 2001. szeptember 8 (English translation)

• First international publication: ECVP2004, Budapest, Hungary, abstract  in Perception

• ECVP2004, Budapest, Hungary (original, submitted abstract)

• Photos from ECVP2004, Budapest, Hungary

• ECVP2005, La Coruña, Spain, August 22-27: addendum to the abstract

• ECVP2005, La Coruña, Spain, Photos 

Citations, references, web links:

• ECVP2004 abstract (Perceptionweb, abstract submission deadline: 9th March, 2004)

• Peter H. Schiller's homepage

• Michael Bach's homepage

• Optikum.at (Bernd Lingelbach and Walter Ehrenstein )

• Top Ten static illusions in Quo magazine

• Aerztezeitung.de (Michael Bach)

• Wikipedia.org

• Encyclopedia.thefreedictionary.com

• Optical Illusions (ACNR / Michael Bach and Charlotte M. Poloschek, 2006) 

• Stuart Anstis In honour of Lothar Spillmann — Filling-in, wiggly lines, adaptation, and aftereffects

• Howe, P.D.L & Livingstone, M,S: The Use of the Cancellation Technique...)

• Gerván Patrícia & Kovács Ilona: Látod? Nem látod? Na látod, Magyar Tudomány, 2007. feb.

• Levine, M. V. & McAnamy, J,.J. 2008, „The effect od curvature on then grid illusions" Perception 37(2) 171 – 184

• Reference in PubMed

• Reference in connect.H1

Further references:
http://www.absoluteastronomy.com/topics/Grid_illusion

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since 2006-05-08

since 2007-12-13

Last modified: 2025-11-11

 ©All rights reserved, 2004  János Geier