 |
Visible Brain Oscillations - An executable windows programme you can manipulate until you see illusory jitter created by neural oscilaltions. Robust jitter should only be seen when green and red are equally bright. Adjust Green by using the mouse to slide the toggle. |
 | Motion induced spatial shifts - Motion and spatial coding in the brain are, to some extent, independent. However, this quicktime movie shows that motion does influence spatial coding. If you loop the movie you should find that although the visual patterns are vertically aligned, they appear offset toward the different motion directions. |
 |
Stream / Bounce Illusion - We often use signals from one modality to disambiguate content in another. Here we have two dots moving back and forth. They can be seen to either pass through one another or to bounce off one another. When a sound is played near the time of contact, people tend to see the dots as bouncing. |
 |
Flash-Lag - In this movie there are three rotating dots. On one frame four addittional dots are flashed. When this happens all the dots are physically aligned, however they do not look aligned - the rotating dots seem to be ahead of the flashed dots. |
 |
Oddball Illusion - When a novel stimulus (here a cow) is inserted into a stream of standard stimulus presentations (a building), the novel stimulus can seem to persist for longer than the standard stimulus presentations, even though the presentation durations are all physically matched. |
 |
Colour-Motion Asynchrony - In this movie the windmill intermittently changes direction and colour. It may seem like it is rotating clockwise when it is red, but it actually rotates both clockwise and counter-clockwise for equal periods while it is red. |
 |
Persistence of Motion-Defined Form - Movement and static form perception can interact. Here, a drifting grating is clearly visible when it moves, but dissapears when it stops. However, it may not seem to dissapear instantly. Instead, it may seem to gradually melt away when movement stops. |
 |
Flicker-Induced Blindness - If you fixate the small red dot in the middle of this movie, after a while the larger red dots may seem to intermittently dissapear. |
 |
Optic Flow - Self-motion creates distinctive patterns of retinal movement. If we look forward when moving ahead, the entire visual field will expand away from the point of fixation. This can be used to create a vivid impression of illusory self-motion. |
 |
The Tilt-Illusion - Visual perception is not accurate. One classic example is the tilt-illusion. Here a physically vertical inner grating looks tilted away from the orientation of a surrounding grating. |
