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Visual Stability
File Size: 2480Kb
Resolution: 112x112
This tutorial tries to answer the question of why sometimes the world appears to stay s...
Receptive Fields
File Size: 1044Kb
Resolution: 112x112
What is a receptive field? Where is the receptive field? What is the 'best stimulus'?
Rotating frans
File Size: 162Kb
Resolution: 570x570
This movie is a dynamic version of the Thatcher or Thompson Illusion. Just this time wi...
M100-3
File Size: 58Kb
Resolution: 288x384
Greyscale frontal photo of male face with a surprised expression. One of a collection o...
Attentional selection and object detection in natural scenes
File Size: 68Kb
Resolution: 1122x767
Hamker, F. H. (2005) The emergence of attention by population-based inference and its ...
Optic Ataxia Reaching
File Size: 38Kb
Resolution: 681x217
Reaching behaviour in an optic ataxia patient with a tumour in her right parietal corte...
Simplified autostereogram
File Size: 48Kb
Resolution: 570x570
A simplified 'magic eye' autostereogram.
Magic Eye
File Size: 114Kb
Resolution: 495x368
One of the original autostereograms devised by Christopher Tyler in 1979. Cross your e...
Valley
File Size: 136Kb
Resolution: 479x476
‘Valley’ by the artist/scientist Akiyoshi Kitaoka. The centre of the figure seems to b...
The Enigma
File Size: 191Kb
Resolution: 662x601
‘The Enigma’ by Isia Leviant (1984). Many people (but not all) report seeing illusory w...
The Pinna illusion
File Size: 42Kb
Resolution: 638x598
The Pinna illusion. If you rock your head backwards and forwards you should see the ri...
Cones in the human retina
File Size: 213Kb
Resolution: 659x591
The distribution of red, green, and blue cones in the human retina. Note the absence ...
Size constancy corridor
File Size: 58Kb
Resolution: 401x501
Size constancy. In the first picture, two men are in a corridor, but which is the bigg...
Snellen Eye Chart
File Size: 27Kb
Resolution: 549x520
The Snellen eye chart. High contrast letters of progressively smaller size allow us to...
Known connections in the brain
File Size: 74Kb
Resolution: 477x477
Scary map of some of the known connections in the brain between different areas process...
Primary Visual Cortex Distortion
File Size: 122Kb
Resolution: 570x570
An image of the world is ‘distorted’ in its representation within the brain. This figur...
Hubel and Wiesel
File Size: 128Kb
Resolution: 570x570
David Hubel and Torsten Wiesel performing their Nobel Prize-winning experiments on area...
Visual Pathways
File Size: 127Kb
Resolution: 570x570
The visual pathways from the eyes to the primary visual cortex, also known as striate c...
Disappearing Doughnut
File Size: 43Kb
Resolution: 570x570
The disappearing doughnut. Stare at the central dot for a while and the doughnut will ...
Simultaneous Contrast Illusion
File Size: 65Kb
Resolution: 570x570
The simultaneous contrast illusion. All the grey circles have the same luminance, but ...
Ganglion cell receptive field filters
File Size: 107Kb
Resolution: 570x570
Click image for full view. A Florida parking lot (a), and the same image after being...
Line drawing recognition
File Size: 92Kb
Resolution: 570x570
Simple line drawings (like cartoons) of an image are enough for us to recognise a figur...
Are big pupils more attractive?
File Size: 80Kb
Resolution: 751x490
Do big pupils make a woman look more attractive? Some drugs, for example deadly nightsh...
Textandback4
File Size: 89Kb
Resolution: 766x575
The right-hand column illustrates how the lef-hand column might look to a colour-blind ...
Textandback3
File Size: 78Kb
Resolution: 789x587
Some examples of colour combinations that are easily seen by a colour-blind person. Th...
Number 6 cb
File Size: 89Kb
Resolution: 763x574
An example of how the world appears to a person with a severe type of colour blindness:...
Which crayon cb
File Size: 89Kb
Resolution: 769x578
An example of how the world appears to a person with a severe type of colour blindness:...
Which cell cb
File Size: 54Kb
Resolution: 766x574
An example of how the world appears to a person with a severe type of colour blindness:...
Which flask cb
File Size: 47Kb
Resolution: 779x590
An example of how the world appears to a person with a severe type of colour blindness:...
Which meat cb
File Size: 85Kb
Resolution: 779x592
An example of how the world appears to a person with a severe type of colour blindness:...
Glaucoma View
File Size: 47Kb
Resolution: 464x278
How the world might look to someone with glaucoma. Much of peripheral vision may be los...
Neglect Cat Drawing
File Size: 72Kb
Resolution: 570x570
People with visual neglect often fail to copy one half of a picture. When asked to ...
Pattern of eye movements
File Size: 116Kb
Resolution: 570x570
Pattern of eye movements whilst looking at a picture.
Perceptn 30 fig 6 p1170
File Size: 101Kb
Resolution: 647x577
Purkinje's eye images, originally used in his inaugural Breslau lecture in 1823.
Poggendorff
File Size: 16Kb
Resolution: 620x568
The poggendorf illusion. The rectangle actually covers one straight line
Brightness 4
File Size: 127Kb
Resolution: 504x504
The upper and lower cubes in the foreground appear very different in lightness. Go to ...
Wave-adapt50
File Size: 88Kb
Resolution: 570x570
(See weblink for interactive version. You could use the 2nd pic in additional images to...
Yamauchi 5 6 3 fig01
File Size: 67Kb
Resolution: 570x570
Example of the transition of the mode of appearance. When a brown paper is dimly lit (a...
Yu klein levi 3 8 1 fig07
File Size: 56Kb
Resolution: 570x570
A simplified model of visual processing. The icon on the lower left of each node repres...
Zhang 3 11 12 fig01
File Size: 89Kb
Resolution: 570x570
Two points on a slanted plane that both have zero disparity when fixated and the same v...
Wheels2
File Size: 255Kb
Resolution: 570x570
The Uzumaki or 'rabbit ears' illusion: when in peripheral vision these spirals appear t...
Zollner1
File Size: 149Kb
Resolution: 570x570
The Zollner Illusion: the horizontal lines are actually parallel, but appear to converg...
Zhang 4 1 4 fig011
File Size: 112Kb
Resolution: 570x570
Schematic coronal section through the right occipital lobe, showing the anatomy of V1 a...
Zollneraki
File Size: 80Kb
Resolution: 570x570
The Zollner Illusion: the horizontal lines are parallel but appear to converge and diverge
Wunfici
File Size: 35Kb
Resolution: 570x570
The Wundt-Fick Illusion: the horizontal lines looks shorter than the vertical line, yet...
Walker-percep-32-p1120-fig1
File Size: 81Kb
Resolution: 570x570
A continuum of morph faces produced by image averaging of an East Asian and Caucasian f...