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Both surrounds
File Size: 239Kb
Resolution: 2029x2029
Six vertical rectangles are shown in a uniform surround and again in a varied surround,...
Ringcontrastdfromdonmacleod
File Size: 88Kb
Resolution: 1200x900
Demonstration of colour contrast: the inner and outer blue rings are the same colour. ...
Visual Areas in the Brain
File Size: 58Kb
Resolution: 512x451
Approximate positions of area V1 and some of the extrastriate visual areas in the human...
Anthony Hopkins skull
File Size: 24Kb
Resolution: 412x420
Sir Anthony Hopkins on the right and a skull on the left, or is it Hopkins on the left ...
Wanage1
File Size: 17Kb
Resolution: 512x512
The outer ring seems to expand and the inner ring seems to contract. The rings also app...
Colour after effect
File Size: 29Kb
Resolution: 883x397
Colour after-effect. Stare at the dot in the centre of the four coloured squares for ...
Lumiloom main
File Size: 76Kb
Resolution: 570x570
An illusion of motion in depth. The figure appears to move towards you (loom) when the ...
Marilyn
File Size: 2094Kb
Resolution: 521x479
An example of how motion is used as a grouping cue. Download Powerpoint file to get the...
191-bidirectional face amb
File Size: 37Kb
Resolution: 431x500
Wherever you are, the eyes of the ghost face follow you...
Rolling Eyes
File Size: 52Kb
Resolution: 1621x1163
A version of the hollow mask illusion with added rolling eyes and nose ring.
Motion Transparency 1
File Size: 38Kb
Resolution: 419x417
The two gratings slide past each other when the lightness of the intersections is compa...
Beuchet Chair
File Size: 156Kb
Resolution: 787x1050
A compact version of the Ames room where misperception of distance leads to improbable ...
Craik-movie
File Size: 105Kb
Resolution: 570x570
A demonstration of the Craik-Obrien-Cornsweet Effect
Zenshin2
File Size: 35Kb
Resolution: 512x512
In this illusion, the rings appear to rotate when fixating on the centre and moving tow...
Textandback2
File Size: 101Kb
Resolution: 773x581
The right-hand column illustrates how the left-hand column might look to a colour-blind...
Brightness 4
File Size: 127Kb
Resolution: 504x504
The upper and lower cubes in the foreground appear very different in lightness. Go to ...
Slalom
File Size: 76Kb
Resolution: 570x570
The demo simulates locomotion in a straight path across a ground plane in real time. Wh...
Square illusion6
File Size: 45Kb
Resolution: 570x570
Humans consistently err in their percepts of rotational motion viewed through an apertu...
Kallspat26
File Size: 42Kb
Resolution: 509x420
Schematic illustration of the size of receptive fields in (a) the parafoveal region and...
Lgn-projections
File Size: 138Kb
Resolution: 650x440
The projections of the small (P cells) and large (M cells) ganglion cells to the parvoc...
Rotating frans
File Size: 162Kb
Resolution: 570x570
This movie is a dynamic version of the Thatcher or Thompson Illusion. Just this time wi...
Amb arrows
File Size: 3Kb
Resolution: 227x151
While blue arrows point to the right, red arrows also point to the left
Cow 3d
File Size: 19Kb
Resolution: 242x349
Construct your own desktop hollow-face illusion! (Note that the cow's face is hollow.) ...
Bachshepardtables
File Size: 63Kb
Resolution: 570x570
Compare the two tables in the neighbouring figure. How do size and shape of the two tab...
Poggendorff
File Size: 16Kb
Resolution: 620x568
The poggendorf illusion. The rectangle actually covers one straight line
Colortest
File Size: 87Kb
Resolution: 570x570
A test for colour blindness. Picture A should look like number 3 and picture B should l...
Building
File Size: 252Kb
Resolution: 480x640
In this picture the tall building appears to move upwards when seen in peripheral vision
Perceptn 30 fig 2b p1162
File Size: 33Kb
Resolution: 350x394
A portrait of Christoph Scheiner (1571-1650).
Confusing Stair
File Size: 60Kb
Resolution: 760x472
This is an impossible structure, there are many impossible structures in this photo, lo...
Corner from ron rensink
File Size: 539Kb
Resolution: 570x570
Change blindness: can you spot the difference between the two alternating images?
Brainardconstancy27
File Size: 80Kb
Resolution: 720x540
Bayesian framework for colour constancy: the prior
Walk
File Size: 28Kb
Resolution: 570x570
A demonstration of how motion can be used to extract meaningful interpretations of arti...
Eccentricity animation - full size
File Size: 126Kb
Resolution: 570x570
Gaze direction and emotional expressions. The only stimulus change is the motion of the...
8cycles
File Size: 26Kb
Resolution: 447x447
The peripheral drift illusion: patches containing sawtooth luminance profiles produce a...
Ergfig17
File Size: 52Kb
Resolution: 536x599
Factors affecting ERGs: ERG responses recorded from a subject with a corneal electrode ...
Ponzo wall all
File Size: 6Kb
Resolution: 206x122
The Ponzo Wall illusion: the two human figures are actually the same size, although the...