Wundt illusion
The Wundt illusion is an optical illusion that was first described by the German psychologist Wilhelm Wundt in the 19th century.[1] The two red vertical lines are both straight, but they may look as if they are bowed inwards to some observers. The distortion is induced by the crooked lines on the background, as in the Orbison illusion. The Hering illusion produces a similar, but inverted effect.
Vertical-horizontal illusion
Another variant of the Wundt illusion is the Horizontal–Vertical Illusion, introduced by Wundt in 1858. The two intersecting lines are equal in length although the vertical line appears to be much longer. The horizontal line needs to be extended up to 30% to match the perceptual length of the vertical line. This is not confined to simple line drawings, as this can also be seen in buildings, parking meters, as well as other things viewed in a natural setting.
References
- ^ Wade, Nicholas J; Sakurai, Kenzo; Gyoba, Jiro (February 2007). "Whither Wundt?". Perception. 36 (2): 163–166. doi:10.1068/p3602ed. ISSN 0301-0066. PMID 17402661.
External links
- Media related to Wundt illusion at Wikimedia Commons
- v
- t
- e
- Afterimage
- Ambigram
- Ambiguous image
- Ames room
- Autostereogram
- Barberpole
- Bezold
- Café wall
- Checker shadow
- Chubb
- Cornsweet
- Delboeuf
- Ebbinghaus
- Ehrenstein
- Flash lag
- Fraser spiral
- Gravity hill
- Grid
- Hering
- Impossible trident
- Irradiation
- Jastrow
- Lilac chaser
- Mach bands
- McCollough
- Müller-Lyer
- Necker cube
- Oppel-Kundt
- Orbison
- Penrose stairs
- Penrose triangle
- Peripheral drift
- Poggendorff
- Ponzo
- Rubin vase
- Sander
- Schroeder stairs
- Shepard tables
- Spinning dancer
- Ternus
- Vertical–horizontal
- White's
- Wundt
- Zöllner
- Op art
- Trompe-l'œil
- Spectropia (1864 book)
- Ascending and Descending (1960 drawing)
- Waterfall (1961 drawing)
- The dress (2015 photograph)
This psychology-related article is a stub. You can help Wikipedia by expanding it. |
- v
- t
- e