Illusion news 15

since April 25, 2011


The website of Illusion Contest in Japan has been opened!

cf. The website of Best Illusion of the Year Contest

<December 31, 2012>


The Okuma illusion: a new illusion of leaning
Yasuda T, Ueda T, Shiina K, 2012, "The Okuma illusion: a new illusion of leaning" Perception 41(10) 1277 – 1280

(First prize of the 3rd Illusion Contest in Japan)

<December 21, 2012>


Correction to a report in Illusion News 6

Wundt (1897, Fig. 49) cited this image as Ebbinghaus' figure. Kitaoka (2005), however, inferred that the first scholar who produced this illusion (= Ebbinghaus size illusion, Ebbinghaus areal illusion, Titchener illusion, Titchener circle, etc.) might be in fact Lipps, since the figure is found (without reference) in a monograph by Lipps (1897, p. 222), (a year before) published in the same year but probably before Wundt's monograph (manuscript was submitted on October 25th 1897 and published on December 30th 1897) and also earlier than the textbooks by Ebbinghaus (1902) or Titchener (1901). Recently, Walter H. Ehrenstein, University of Dortmund, found that Thiéry showed this image with explicit reference to Ebbinghaus even earlier (Thiéry, 1896, pp. 84-85; Figs. 51A and 51B). Thus, it is strongly suggested that the above figure has indeed originated with Ebbinghaus as had been suggested before by Ehrenstein & Hamada (1995, p. 158), based on Wundt’s (1897) account. Below is Walter's opinion:



References
Ebbinghaus, H. (1902) Grundzüge der Psychologie. Leipzig: Veit.
Ehrenstein, W.H. and Hamada, J. (1995) Structural factors of size contrast in the Ebbinghaus illusion. Japanese Psychological Research, 37, 158-169.
Kitaoka, A. (2005) Geometrical illusions. In Goto, T. and Tanaka, H. (Eds.), Handbook of the Science of Visual Illusion, Tokyo: University of Tokyo Press (pp. 56-77).
Lipps, T. (1897) Raumästhetik und geometrisch-optische Täuschungen. Leipzig: Barth.

(Thiéry, A. (1896) Über geometrisch-optische Täuschungen, Schluss. Philosophische Studien, 12, 67-126.)
Thiéry, Armand. 1896. Ueber geometrisch-optische Täuschungen, Schluss. Philosophische Studien 12: 67-126
online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit4242

Titchener, E. B. (1901) Experimental Psychology: A Manual of Laboratory Practice, Volume I. New York: Macmillan.

(Wundt, W. (1898) Die geometrisch-optischen Tãuschungen. Abhandlungen der Mathematisch-Physischen Classe der Sächsischen Gesellschaft der Wissenschaften, Leipzig, 24, 53-178.)

Maybe this one is more true to original:

Wundt, Wilhelm. 1897. Die geometrisch-optische Täuschung. Abhandlungen der Königlich Sächsischen Gesellschaft der Wissenschaften: Mathematisch-physische Classe 24: 55-178

or shortly Wundt, W. Max. (1897). Die geometrisch-optischen Täuschungen. Leipzig: B. G. Teubner.

Maybe even to say that this publication is usually cited as published in 1898, whereas the actual publication date is December 30th 1897.

Thanks to Jasmina

<December 22, 2012>


--- The original is shown below ---

The Ebbinghaus illusion may be Ebbinghaus' illusion!

<August 25, 2007>

Wundt (1898, Fig. 49) cited this image as Ebbinghaus' figure. Kitaoka (2005), however, inferred that the first scholar who produced this illusion (= Ebbinghaus size illusion, Ebbinghaus areal illusion, Titchener illusion, Titchener circle, etc.) might be in fact Lipps, since the figure is found (without reference) in a monograph by Lipps (1897, p. 222), a year before Wundt's monograph and also earlier than the textbooks by Ebbinghaus (1902) or Titchener (1901). Recently, Walter H. Ehrenstein, University of Dortmund, found that Thiéry showed this image with explicit reference to Ebbinghaus even earlier (Thiéry, 1896, pp. 84-85; Figs. 51A and 51B). Thus, it is strongly suggested that the above figure has indeed originated with Ebbinghaus as had been suggested before by Ehrenstein & Hamada (1995, p. 158), based on Wundt’s (1898) account. Below is Walter's opinion:

So I think, it is Ebbinghaus who first designed it and may have communicated his figure at a congress before 1896 (rather than publish it, although this might be still the case, at that time the scientific world was quite small and people knew the work of each other even without explicit reference).

References
Ebbinghaus, H. (1902) Grundzüge der Psychologie. Leipzig: Veit.
Ehrenstein, W.H. and Hamada, J. (1995) Structural factors of size contrast in the Ebbinghaus illusion. Japanese Psychological Research, 37, 158-169.
Kitaoka, A. (2005) Geometrical illusions. In Goto, T. and Tanaka, H. (Eds.), Handbook of the Science of Visual Illusion, Tokyo: University of Tokyo Press (pp. 56-77).
Lipps, T. (1897) Raumästhetik und geometrisch-optische Täuschungen. Leipzig: Barth.

Thiéry, A. (1896) Über geometrisch-optische Täuschungen, Schluss. Philosophische Studien, 12, 67-126.
Titchener, E. B. (1901) Experimental Psychology: A Manual of Laboratory Practice, Volume I. New York: Macmillan.
Wundt, W. (1898) Die geometrisch-optischen Tãuschungen. Abhandlungen der Mathematisch-Physischen Classe der Sächsischen Gesellschaft der Wissenschaften, Leipzig, 24, 53-178.


Information of Theodor Lipps

  1. Engelmann, Theodor Wilhelm, E. Javal, A. König, J. von Kries, T. Lipps, L. Matthiessen, W. Preyer und W. Uhthoff. 1891. Beiträge zur Psychologie und Physiologie der Sinnesorgane: Hermann von Helmholtz als Festgruss zu seinem 70. Geburtstag. Edited by Arthur König. Hamburg / Leipzig: Voss
  2. Lipps, Theodor. 1883. Grundtatsachen des Seelenlebens. Bonn
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit38969
  3. Lipps, Theodor. 1885. Psychologische Studien. Heidelberg
  4. Lipps, Theodor. 1889. Bemerkungen zur Theorie der Gefühle. Vierteljahrsschrift für wissenschaftliche Philosophie 13: 160-194
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit39712
  5. Lipps, Theodor. 1890. Zur Psychologie der Kausalität. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 1: 252-299
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit14201
  6. Lipps, Theodor. 1890. Über eine falsche Nachbildlokalisation und damit Zusammenhängendes. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 1: 60-74
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit14185
  7. Lipps, Theodor. 1892. Ästhetische Faktoren der Raumanschauung, Beiträge zur Psychologie und Physiologie der Sinnesorgane: Hermann von Helmholtz als Festgruß zu seinem siebzigsten Geburtstag dargebracht. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 3: 219-221
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit14763
  8. Lipps, Theodor. 1892. Die Raumanschauung und die Augenbewegungen. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 3: 123-171
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit14712
  9. Lipps, Theodor. 1892. Optische Streitfragen. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 3: 493-504
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit14934
  10. Lipps, Theodor. 1895. Zur Lehre von den Gefühlen, insbesondere den ästhetischen Elementargefühlen. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 8: 321-361
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit29565
  11. Lipps, Theodor. 1896. Berichtigung zu dem Aufsatze über "Die geometrisch-optischen Täuschungen" in Bd. XII. [, 1896,] S. 39 ff. dieser Zeitschrift [f. Psychol. u. Physiol. d. Sinnesorg.]. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 12: 275
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit36206
  12. Lipps, Theodor. 1897. Bemerkung zu Heymans' Artikel "Quantitative Untersuchungen über die Zöllnersche und die Loebsche Täuschung" in Band XIV, Seite 101 ff. dieser Zeitschrift. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 15: 132-138
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit30202
  13. Lipps, Theodor. 1898. G. F. Stout: Analytic Psychology. London, Swan, Sonnenschein & Co., 1896. 2 Bände, 289 u. 314 S. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 16: 399-409
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit30341
  14. Lipps, Theodor. 1898. Raumästhetik und geometrisch-optische Täuschungen. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 18: 405-441
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit36184
  15. Lipps, Theodor. 1899. Tonverwandtschaft und Tonverschmelzung. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 19: 1-40
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit30536
  16. Lipps, Theodor. 1905. Zur Verständigung über die geometrisch-optischen Täuschungen. Zeitschrift für Psychologie und Physiologie der Sinnesorgane 38: 241-258
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit32031


Another one Lipps, Theodor. 1891. Ästhetische Faktoren der Raumanschauung, Beiträge zur Psychologie und Physiologie der Sinnesorgane: Hermann von Helmholtz als Festgruß zu seinem siebzigsten Geburtstag dargebracht. Zeitschrift für Psychologie und Physiologie der Sinnesorgane, Leipzig-Hamburg s:217-307
http://archive.org/stream/sthetischefakto00lippgoog#page/n6/mode/2up

Thanks to Jasmina

<December 21, 2012>

Information of Armand Thiéry

  1. Thiéry, Armand. 1895. Ueber geometrisch-optische Täuschungen [In drei Teilen]. Philosophische Studien 11: 307-370
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit4531
  2. Thiéry, Armand. 1895. Ueber geometrisch-optische Täuschungen, Fortsetzung. Philosophische Studien 11: 603-620
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit4538
  3. Thiéry, Armand. 1896. Ueber geometrisch-optische Täuschungen, Schluss. Philosophische Studien 12: 67-126
    online version: http://vlp.mpiwg-berlin.mpg.de/references?id=lit4242

Thanks to Jasmina

<December 22, 2012>


The furrow illusion: Peripheral motion becomes aligned with stationary contours
Stuart Anstis
J Vis 2012;12 12
http://www.journalofvision.org/cgi/content/abstract/12/12/12

Anstis, S. (2012) The furrow illusion: Peripheral motion becomes aligned with stationary contours. Journal of Vision, 12(12):12, 1–11.

<November 22, 2012>


Some of Akiyoshi Kitaoka's (北岡明佳) works has been exhibited in Hong Kong.

Christmas Illusion exhibition
Date: 17 Nov-2013, 6 Jan
Time: 10:00am-10:00pm
Venue: Kingswood Ginza Phase 1, Tin Shui Wai, Hong Kong

<November 14, 2012>


Professor Yanaka's study has been introduced.

Friday Illusion: Rotating snakes get a new twist

<September 24, 2012>


The result <May 15, 2012; address corrected August 22, 2012>

The Best Illusion of the Year Contest is happy to announce that the TOP TEN illusions have been chosen!!

The Contest Gala will be on Monday, May 14th, 5pm, in the Philharmonic Center of Arts (Naples Fl). The 2012 Contest Gala will be hosted by Margaret Livingstone and Stuart Anstis! Everybody is invited!!!

Who will the TOP THREE winners be??? That’s up to YOU! The audience will choose them from the current TOP TEN list.

For more details, please visit our webpage: http://illusionoftheyear.com


2012 TOP TEN ILLUSION CONTESTANTS
(alphabetical order): To see the illusions themselves… you must come to the CONTEST!!!

Title TBA: Stuart Anstis, UC San Diego, USA

"Head-Size Illusion": Kazunori Morikawa and Eri Ishii, Osaka University, Japan

"Floating Star": Kaia Nao

"The Disappearing Hand Trick": Roger Newport, Helen Gilpin and Catherine Preston, University of Nottingham, UK

"Exorcist Illusion – Twisting Necks": Thomas Papathomas, Tom Grace Sr., Marcel de Heer and Robert Bunkin, Rutgers University, USA

"Color Wagon Wheel": Arthur Shapiro and William Kistler, American University, USA

"When Pretty Girls Turn Ugly: The Flashed Face Distortion Effect": Jason Tangen, Sean Murphy and Matthew Thompson, The University of Queensland, Australia

"Peripheral Action Phantom Illusion": Steven Thurman and Hongjing Lu, UCLA, USA

"Attentional modulation of perceived color": Peter Tse, Dartmouth College, USA

"Illusion of Height Contradiction": Sachiko Tsuruno, Kinki University, Japan

On behalf of the Neural Correlate Society,

Susana Martinez-Conde (Executive Producer, Best Illusion of the Year Contest)

Neural Correlate Society Executive Committee: Jose-Manuel Alonso, Stephen Macknik, Susana Martinez-Conde, Luis Martinez, Xoana Troncoso, Peter Tse

The Neural Correlate Society is a tax-exempt 501(c)3 non-profit organization, whose mission is to promote the public awareness of neuroscience research.


---
Source:

Sent: Monday, April 30, 2012 11:12 AM
To: cvnet@mail.ewind.com
Subject: CVNet - TOP 10 FINALIST ILLUSIONS!

<April 30, 2012>


Microsaccades and Blinks Trigger Illusory Rotation in the “Rotating Snakes” Illusion

Jorge Otero-Millan,
Stephen L. Macknik,
and Susana Martinez-Conde

Microsaccades and Blinks Trigger Illusory Rotation in the “Rotating Snakes” Illusion
The Journal of Neuroscience, 25 April 2012, 32(17):6043-6051; doi:10.1523/JNEUROSCI.5823-11.2012

Otero-Millan, J.,Macknik, S. L., and Martinez-Conde, S. (2012). Microsaccades and Blinks Trigger Illusory Rotation in the “Rotating Snakes” Illusion. Journal of Neuroscience, 32, 6043-6051. Jump to J. Neurosci. for PDF) - (cover)

<April 29, 2012>

The "optimized Fraser-Wilcox" illusion (including the "Rotating snakes" illusion)


Related references
<before April 29, 2012>

Ashida, H., Kuriki, I., Murakami, I., Hisakata, R. and Kitaoka, A. (2012 forthcoming). Direction-specific fMRI adaptation reveals the visual cortical network underlying the "Rotating Snakes" illusion. NeuroImage, in press new!

Otero-Millan, J.,Macknik, S. L., and Martinez-Conde, S. (2012). Microsaccades and Blinks Trigger Illusory Rotation in the “Rotating Snakes” Illusion. Journal of Neuroscience, 32, 6043-6051. new!

Stevanov, J., Marković, S., and Kitaoka, A. (2012). Aesthetic valence of visual illusions. i-Perception, 3(2), 112–140. PDF (i-Perception)

Yanaka, K. and Hilano, T. (2011). Mechanical shaking system to enhance "Optimized Fraser–Wilcox Illusion Type V". Perception, 40, ECVP Abstract Supplement, page 171

Tomimatsu E., Ito, H., Sunaga, S., & Remijn, G. B. (2011). Halt and recovery of illusory motion perception from peripherally viewed static images. Attention, Perception, & Psychophysics, 73, 1823-1832.

Idesawa, M. (2010). A Model of Illusory Motion Perception in Still Figures. Optical Review, 17, 557–561.

Tomimatsu, E., Ito, H., Seno, T., and Sunaga, S. (2010). The ‘rotating snakes’ in smooth motion do not appear to rotate. Perception, 39, 721-724.

Fermüller, C., Ji, H., and Kitaoka, A. (2010). Illusory motion due to causal time filtering. Vision Research, 50, 315–329.

Scientific American Mind, Special Issue: 169 Best Illusions (2010).

Cantor, C. R. L., Tahir, H. J., & Schor, C. M. (2010). Is the rotating snakes an optical illusion? Journal of Vision, 10(7), 824a.

Kitaoka, A. (2010). Introduction to Visual Illusions. Tokyo: Asakura-shoten, pp.110-111 (in Japanese). More info

Billino, J., Hamburger, K., & Gegenfurtner, K. R. (2009). Age effects on the perception of motion illusions. Perception, 38, 508-521.

Kitaoka, A. (2008) Trick Eyes Mechanism. Tokyo: Kanzen (in Japanese). More info

Kuriki, I., Ashida, H., Murakami, I., and Kitaoka, A. (2008). Functional brain imaging of the Rotating Snakes illusion by fMRI. Journal of Vision, 8(10):16, 1-10. PDF

Journal of Vision    Volume 8, Number 10, Article 16, Pages 1-10
Functional brain imaging of the Rotating Snakes illusion by fMRI
Ichiro Kuriki
Hiroshi Ashida
Ikuya Murakami
Akiyoshi Kitaoka
http://journalofvision.org/8/10/16/

Kitaoka, A. (2008) Optimized Fraser-Wilcox illusions: A pictorial classification by Akiyoshi Kitaoka. Talk in a workshop (WS005) in the 72nd Annual Convention of the Japanese Psychological Association, Hokkaido University, Sapporo, September 19, 2008. Presentation (html)

Kuriki, I., Ashida, H., Murakami, I., and Kitaoka, A. (2008) Functional brain imaging of the 'Rotating Snakes' illusion. Vision Sciences Society Annual Meeting Abstract, Journal of Vision, 8(6),64a. http://www.journalofvision.org/8/6/64/

Hisakata, R. and Murakami, I. (2008) The effects of eccentricity and retinal illuminance on the illusory motion seen in a stationary luminance gradient. Vision Research, 49, 1940-1948.

Beer, A. L., Heckel, A. H. and Greenlee, M. W. (2008) A motion illusion reveals mechanisms of perceptual stabilization. PLoS ONE, 3(7): e2741, 1-7. doi:10.1371/journal.pone.0002741 Freely available online

Chi, M-T., Lee, T-Y., Qu, Y., and Wong, T-T. (2008) Self-Animating Images: Illusory Motion Using Repeated Asymmetric Patterns. ACM Transaction on Graphics (Proceedings of SIGGRAPH 2008), 27, No.3. SIGGRAPH2008 --- Authors' page --- PDF (SIGGRAPH)

Scientific American Reports Special Edition on Perception (2008).

Kitaoka, A. and Ashida, H. (2007) A variant of the anomalous motion illusion based upon contrast and visual latency. Perception, 36, 1019-1035. PDF request to Akiyoshi Kitaoka

Newton Press (Ed.), A. Kitaoka (Supervisor) (2007) Newton magazine book: Special issue "How is the brain deceived? Perfect demonstration of visual illusions" Tokyo: Newton Press (in Japanese; published in October 2007). 

Ramachandran, V. S. and Rogers-Ramachandran, D. (2007) A Moving Experience: How the eyes can see movement where it does not exist. Scientific American Mind, February/March, 14-16.

Kitaoka, A. (2007) Phenomenal classification of the “optimized” Fraser-Wilcox illusion and the effect of color. Poster presentation in DemoNight, VSS2007, GWiz, Sarasota, Florida, USA, May 14, 2007.

Murakami, I., Kitaoka, A. and Ashida, H. (2006) A positive correlation between fixation instability and the strength of illusory motion in a static display. Vision Research, 46, 2421-2431. PDF request should be sent to Dr. Murakami

Kanazawa, S., Kitaoka, A., & Yamaguchi, M. K. (2006). Infants see the 'Rotating Snake' illusion. Perception, 35, ECVP Abstract Supplement.

Kitaoka, A. (2006). The effect of color on the optimized Fraser-Wilcox illusion. Paper presented for the 9th L'ORÉAL Art and Science of Color Prize, Tokyo (pp.1-16) (Gold prize was given). MS-Word manuscript (75MB)

Kitaoka, A. (2006) Anomalous motion illusion and stereopsis. Journal of Three Dimensional Images (Japan), 20, 9-14. PDF PDF (manuscript but the same as the printed one)

Kanazawa, S., Kitaoka, A. and Yamaguchi, M. K. (2006) Infants see the “Rotating Snake” illusion. Dorsal and ventral streams in the visual system (Talk): Monday, 21 August 2006; 12:00-12:30 (29th European Conference on Visual Perception, St-Petersburg, Russia, 20th-25th August, 2006) Abstract

Kitaoka, A., Ashida, H., and Murakami, I. (2005) Does the peripheral drift illusion generate illusory motion in depth? Journal of Three Dimensional Images (Tokyo), 19, 6-8. PDF (scanned copy) (poor quality) --- MS-Word file (manuscript, the same as the paper) (high quality)

Conway, R. B., Kitaoka, A., Yazdanbakhsh, A., Pack, C. C., and Livingstone, M. S. (2005) Neural basis for a powerful static motion illusion. Journal of Neuroscience, 25, 5651-5656. PDF request should be sent to Dr. Conway

Backus, B. T. and Oruç, I. (2005) Illusory motion from change over time in the response to contrast and luminance. Journal of Vision, 5, 1055-1069. http://journalofvision.org/5/11/10/

Kitaoka, A. (2005) Trick Eyes Graphics. Tokyo: Kanzen (in Japanese and English). More info

Kitaoka, A. and Ashida, H. (2003) Phenomenal characteristics of the peripheral drift illusion. VISION (Journal of the Vision Society of Japan), 15, 261-262. PDF

Naor-Raz, G. and Sekuler, R. (2000) Perceptual dimorphism in visual motion from stationary patterns. Perception, 29, 325-335.

Faubert, J. and Herbert, A. M. (1999) The peripheral drift illusion: A motion illusion in the visual periphery. Perception, 28, 617-621.

Fraser, A. and Wilcox, K. J. (1979) Perception of illusory movement. Nature, 281, 565-566.


i-Perception

Announcing i-Perception volume 3 issue 2

Volume 3 issue 2 has now been finalised and is available here.
i-Perception is an open-access electronic journal.

Contents

Haptic face aftereffect
Kazumichi Matsumiya
Scintillating lustre induced by radial fins
Kohske Takahashi, Haruaki Fukuda, Katsumi Watanabe, Kazuhiro Ueda
Aesthetic valence of visual illusions new!
Jasmina Stevanov, Slobodan Marković, Akiyoshi Kitaoka
Blow-up: a free lunch?
Jan Koenderink, Whitman Richards, Andrea van Doorn

<March 6, 2012>



"Neural correlates of induced motion revealed by fMRI" by Takemura et al. @ 2012 VSS Annual Meeting in Naples, Florida. Poster

Session Name: Motion: Neural mechanisms and models (Poster session)

Session Date and Time: Sunday, May 13, 2012, 2:45 - 6:30 pm
Location: Vista Ballroom

<February 8, 2012>


Nature, too, has highlighted this discovery! <February 2, 2012>


"Bright illusions reduce the eye's pupil"

Bruno Laeng, Professor of University of Oslo, and his colleague showed that illusions of brightness cause constriction of the eye pupil as if the eye was exposed to more light!

Moreover, one of the illusions they have used in this research was one of my illusion works 'Asahi' (morning sunlight), as shown below. Thanks, Bruno!

Laeng, B. and Endestad, T. (2012). Bright illusions reduce the eye's pupil. Proceedings of the National Acedemy of Sciences of the United States of America (PNAS), February 7, vol. 109 no. 6 2162-2167.

http://www.pnas.org/content/109/6/2162

& ScienceShot: Brightness Is in the Eye of the Beholder

Your pupil must be constricted!




Akiyoshi's further comment

This effect is kind of visual phantom illusion or Zavagno's glare effect. Note that the glare appears to be brighter at a glance than no-glare white parts, but the glare actually appears to be darker if analytically or locally (point-to-pointwise) observed, i.e. counterphase brightness induction. Thus, pupils contract in spite of dark stimuli!

Kitaoka, A., Gyoba, J., and Sakurai, K. (2006) Chapter 13 The visual phantom illusion: a perceptual product of surface completion depending on brightness and contrast. Progress in Brain Research, 154 (Visual Perception Part 1), 247-262. PDF --- Talk in ECVP2005



Akiyoshi's further comment 2

"Evening dusk"
The illusion and title were proposed by Bruno Laeng; This image was drawn by Akiyoshi Kitaoka 2012 (January 24)

The space surrounded by 'petals' appears to be darker than the outer space, though they are the same luminance. This has been given by Bruno (Figure 1b: http://www.pnas.org/content/109/6/2162), but I have never shown such a demo. Thus, I think that the credit of this effect should be given to Bruno. Or did someone show this? If so, let me know.

<January 24, 2012>


Composites of portrait and profile (Creator: Jesús González Rodríguez) <January 27, 2012>


Nice Demos!
Flash-lag effect: Flash-lag Effect: Visual Illusion 3D (uploaded November 1, 2011 on YouTube by Professor Eiji Watanabe)
Flash-drag effect: Flash-drag Effect 3D demo (uploaded January 4, 2012 on YouTube by Professor Eiji Watanabe)
Alley experiments: Three Tokyo Sky Trees (uploaded January 4, 2012 on YouTube by Professor Eiji Watanabe)

<January 23, 2012>


Medaka (kinds of fish) see a visual illusion of prey!

Matsunaga, W. & Watanabe, E. Visual motion with pink noise induces predation behaviour. Sci. Rep. 2, 219; DOI:10.1038/srep00219 (2012). Access

<January 12, 2012>


ECVP2012
European Conference on Visual Perception | 2-6 September 2012, Alghero, Italy

VSAC2012
1st Visual Science of Art Conference | 1-2 September 2012, Alghero, Italy

<December 21, 2011>

The 35th ECVP - European Conference on Visual Perception
2-6 September 2012, Alghero, Italy



ECVP in 2012 will be held in Alghero, Sardinia, Italy from Sunday the 2nd of September to Thursday the 6th of September 2012 at the Conference Centre, situated in front of the beach, a few minutes from the town centre. For detailed information about ECVP please visit the following website: http://www.ecvp2012.uniss.it/

This year ECVP is being organized by Baingio Pinna assisted by his group of Form & Perception Lab, as well as by the Dept. of Architecture, Design & Planning at Alghero.

Alghero lies on the northwest “Coral Coast” of Sardinia, one of the most beautiful and well-known places in Sardinia and an ancient Catalan fortress on the sea, with its great bastion walls, cobbled streets of its historic centre, ancient houses and churches in little piazzas. Alghero, with its wonderful beaches and their emerald water, is a real pearl on the Mediterranean Sea.

We are honored to have two prestigious speakers for our plenary sessions at ECVP 2012:
Sunday 2nd September 2012 at 18.00, Giacomo Rizzolatti (University of Parma) - Rank Prize Lecture.
Wednesday 5th September 2012 at 18.00, David Burr (University of Florence) - Perception Lecture.

ECVP 2012 will feature participant initiated talk sessions, which will address important topics in vision research. There will also be a number of social events, such as a beach party, a Gala Banquet with traditional Sardinian music and dances, etc.

IMPORTANT DATES:
Early registration has to be confirmed and paid before 1st July 2012

Abstract submission open: 11th January 2012
Deadline for abstracts: 1st April 2012
Proposals for Symposia: 1st April 2012

Doctoral fellowships
Deadline is 1st April 2012

Poster Awards
Deadline is 1st September 2012


In 2012, ECVP will be twinned to the VISUAL SCIENCE OF ART CONFERENCE (VSAC), which is the first edition of a worldwide academic conference aimed at studying scientific interactions between vision science and art. We very much hope that there will be many of you who would be interested in attending both meetings. For more information, please visit the website of VSAC: http://www.ecvp2012.uniss.it/index.php/eng/VSAC/

In addition, VSAC and ECVP 2012 will hold a special exhibition called “IllusoriaMente” (in English both illusorily and the illusory mind) dedicated to the memory of the late Prof. Richard Gregory and Prof. Tom Troscianko and celebrating the ingenuity and creativity of both VSAC and ECVP attenders in producing attractive scientific/artistic products ranging from visual illusions to all kinds of experimental tools/procedures to applications/implementations of theories, mechanisms and principles ruling the visual system.

For scientific questions and symposium suggestions,
please contact Baingio Pinna at this address:
baingio <at mark> uniss.it

For conference registration, administrative or technical questions, please contact:
ecvp2012 <at mark> uniss.it

For sponsorship and exhibition, please contact:
ecvp2012 <at mark> uniss.it

Looking forward to seeing you in Alghero,


The 1st VSAC - Visual Science of Art Conference
1-2 September 2012, Alghero, Italy



The Visual Science of Art Conference (VSAC - http://www.ecvp2012.uniss.it/index.php/eng/VSAC/) is the first edition of a worldwide academic conference aimed at studying scientific interactions between vision science and art. VSAC in 2012 will be held in Alghero, Sardinia, Italy from Saturday the 1st of September to Sunday the 2nd of September 2012 at the Conference Centre, situated in front of the beach, a few minutes from the town centre. In 2012 VSAC will be twinned to the European Conference on Visual Perception (ECVP 2-6 September - http://www.ecvp2012.uniss.it/).

In the last decade there has been a growing interest by scientists in studying interactions between art and vision. A strongly increasing number of publications (articles, books, special issues) and meetings (workshops, symposia) encouraged researchers, scholars and students to gather together in a unitary community that can cooperate, discuss and develop new scientific perspectives in this complex and intriguing new field.
A bridge between Vision Science and Art has already been constructed. Recent scientific discoveries contribute to the understanding of Art, and Art incorporates knowledge generated by science. The VSAC 2012 further stimulates and speeds up this construction to organize a Visual Science of Art community. For detailed information about VSAC please visit the following website: http://www.ecvp2012.uniss.it/index.php/eng/VSAC/

This year VSAC is being organized by Baingio Pinna assisted by his group of Form & Perception Lab, as well as by the Dept. of Architecture, Design & Planning at Alghero.

Alghero lies on the northwest “Coral Coast” of Sardinia, one of the most beautiful and well-known places in Sardinia and an ancient Catalan fortress on the sea, with its great bastion walls, cobbled streets of its historic centre, ancient houses and churches in little piazzas. Alghero, with its wonderful beaches and their emerald water, is a real pearl on the Mediterranean Sea.
We hope that there will be many of you who would be interested in attending the VSAC.

We are honored to have a prestigious speaker for our plenary session:
Sunday morning 2nd September 2012, Jan Koenderink (Katholieke Universiteit Leuven).

IMPORTANT DATES:
Early registration has to be confirmed and paid before 1st July 2012

Abstract submission open: 11th January 2012
Deadline for abstracts: 1st April 2012
Proposals for Symposia: 1st April 2012

In addition, VSAC and ECVP 2012 will hold a special exhibition called “IllusoriaMente” (in English both illusorily and the illusory mind) dedicated to the memory of the late Prof. Richard Gregory and Prof. Tom Troscianko and celebrating the ingenuity and creativity of both VSAC and ECVP attenders in producing attractive scientific/artistic products ranging from visual illusions to all kinds of experimental tools/procedures to applications/implementations of theories, mechanisms and principles ruling the visual system.

For scientific questions and symposium suggestions,
please contact Baingio Pinna at this address:
baingio <at mark> uniss.it

For conference registration, administrative or technical questions, please contact:
vsac2012 <at mark> uniss.it

For sponsorship and exhibition, please contact:
vsac2012 <at mark> uniss.it

Looking forward to seeing you in Alghero,


Baingio


SfN Takemura et al. present:

Hiromasa Takemura1,2), Hiroshi Ashida3), Kaoru Amano4,5), Akiyoshi Kitaoka 6, 7), Ikuya Murakami1)

1) Depatment of Life Science, The University of Tokyo
2) JSPS Research Fellow
3) Graduate School of Letters, Kyoto University
4) Department of Complex Science and Engineering, The University of Tokyo
5) PRESTO, JST
6) Department of Psychology, Ritsumeikan University
7) CREST, JST 

As mentioned in a previous notification, your abstract is scheduled for Poster Session 695, Motion Processing in the Human Brain, which will be held on Tuesday, November 15, 2011 in the Hall A-C. The session will begin at 1:00pm. Your abstract's detailed presentation information is listed below:

 

Abstract Control Number:  1647

Abstract Title:  Neural correlates of induced motion perception in the human visual cortex

Presentation Number:  695.05

Presentation Time:  1:00pm - 2:00pm

Poster Board Number: NN21

<July 26, 2011>


i-PERCEPTION volume 2, issue 4
http://i-perception.perceptionweb.com/journal/I/volume/2/issue/4
Contents: Asia-Pacific Conference on Vision, Hong Kong, 2011

<July 11, 2011>


"Illusion Museum" was opened in Tokyo today!!

map

<May 14, 2011>


A website "Test online the level of stress a person can handle using stress pictures: are they animated, moving?" abuses three of my illusion works as well as claims an unscientific idea. To my knowledge, stress has nothing to do with visual illusion. <April 25, 2011>


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