Images and Links for Rice Alumni College 2004
Cognitive Neuroscience: Brain, Vision, Thought
Dr. James Pomerantz, Rice University, March 13, 2004
Focusing slide: here
Eight basic facts about perception
Edgerton Bullet (Harold Edgerton, photographer)
Hermann Grid, Scintillating Grid
Pencil in water 'optical' illusion
Apparent (beta) Motion, Ternus Effect: zero ISI, longer ISI, Ambiguous Direction
Multistability: Barber Pole Motion (Hans Wallach, 1935)
Metacontrast, slowed down (plus another site)
Shepard Boxtops Demo (Shepard, in Kubovy & Pomerantz, 1981)
Adelson Shadow Effect (Edward Adelson, MIT)
Necker Cube, Subjective Necker Cube,
Kanizsa's Subjective Contour Dot Window
Disappearance of Stabilized Images
Color afterimages 2, 3, 4
Retina Layers, another cartoon
Mach Bands: Lightness strips vs. gradient
Retinal Network Model: Mach Bands
Good Links to Perception websites
Illusionworks (site appears to be down; for archived version click here)
Tutis Vilis, University of Western Ontario, and here also
ViperLib (free registration required)
U. S. Allocation of Frequency Spectrum
Depth of Field (Cornsweet, 1970)
Benussi Ring (simultaneous contrast)
Disappearance of Stabilized Images
Visual Cortex (Scientific American, Nov. 1999)
Kanizsa's Subjective Contour Dot Window (Kanisza, 1979)
Subjective Contour with transparency
Mach Bands: Lightness strips vs. gradient
Retinal Network Model: Mach Bands
Cornsweet Edges construction, demo
Purvis Lab demosMarr - Zero Crossing 1 (David Marr, Vision, 1982)
Categorical Perception: smooth continuum vs. bands
Wavelengths for Sunlight, Tungsten
Wavelengths for Lemons, Oranges
Color Mixture - additive vs. subtractive
Color afterimages 2, 3, 4
Opponent Process Model (older, wrong model previously on this site)
McCollough Effect (downloadable PowerPoint, or viewable pdf version)
Desaturating different wavelengths
The Challenge of Perceptual Organization
Guzman: Blocks World, Intersection types
Non-additivities: Subjective Contour Apparent Motion
Gestalt Organization: Soap Bubble metaphor
Grouping by Similarity: Texture Segmentation by Slope
Triangle's Figure Ground relationships
Irwin Rock's Figure Ground Demonstration
Gestalt Figure Ground Law of Area
Multistability/ Ambiguity: Wife, MIL
Multistability/ Ambiguity: More examples
Multistability: Rubin's Faces-Vase
Multistability: Barber Pole Motion (Hans Wallach, 1935)
Segmentation into Parts: Hoffman
Kanizsa's Subjective Contour Triangle, Dot Window
Symmetry and Figure-Ground Segregation
Symmetry Detection: Unperceived symmetry
Rock: Orientation and form, symmetry perception
Rock: Orientation and symmetry, 2
Symmetry and Figure - Ground Columns 1
Symmetry and Figure - Ground Columns 2
Impossible Figures: Penrose Triangle
Impossible Figures: 3 pronged clevis
Impossible Figures: Hochberg Cube
Impossible Figures: Modified Hochberg Cube
Configural Superiority Effect: 1, 2, 3, 4
Ternus Effect: zero ISI, longer ISI, displaced, bar
Ambiguous Direction of Apparent Motion
Barber Pole Illusion (Hans Wallach)
Simple motion detection circuit
Johansson Point Light, animated
Illusory Rotation, another, check this site
Rubber Pencil 1, 2, 3, 4
Gelatinous Ellipse, with surround (MIT site)
Transparency and motion: static, moving
Rolling Wheel (Jeff Segars)
Muller-Lyer and Apparent Motion (Colin Bauer)
Wave motion effects (Colin Bauer)
Crossed, uncrossed disparity and the horopter
Trompe l'oeil art: finished, under construction (pronounced "tromp loy")
