Cogent Graphics

Cogent Graphics is a graphics toolbox for MATLAB on the PC. You can use Cogent Graphics to generate real-time graphical animations for use as stimuli in visual experiments. Cogent Graphics provides commands for generating animations with millisecond accuracy at refresh rates up to 160Hz as well as mouse and keyboard support for user input.

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Here you can view some movie files of animations created using Cogent Graphics. Please note that the movies are of lower quality than the original Cogent Graphics animations which run full screen with no jerkiness. The movie clips run only five seconds before repeating but the original animations run indefinitely. Click on the small image to view the movie. Be warned that the movie files are quite large (up to 2Mb) and may take some time to download.

Simple animation

A simple animation

Matlab source code for this animation

Bouncing balls

Bouncing coloured balls

Spinning dartboards

Three spinning, bouncing dartboards

Scrolling check pattern

A scrolling check pattern


A full colour star field

Latest news

  • Now available: Semir Zeki's first book, A Vision of the Brain, can be downloaded here.
  • Upcoming lecture 25/04/14 17:45 Madrid: Closing Lecture on Neuroesthetics at I Jornado internacional sobre neuroestética.
  • Upcoming lecture 03/05/14 10:30 Sydney - Art Gallery of New South Wales: Keynote address on The Fatal Trio: Beauty, Desire, Love at the 19th Sydney Biennale.
  • Upcoming lecture 06/05/14 University of Melbourne - The Florey Institute: Lecture on The neurobiology of subjective experiences - from colour to beauty
  • Upcoming lecture 15/05/14 18:00 Café Scientifique: Lecture on The Science of Beauty
  • In discussion 04/06/14 18:00 Cheltenham: ...with Ophelia Deroy and Chris McManus on Beauty and the Brain at The Times Cheltenham Science Festival 2014.
  • In dialogue 06/06/14 University of Catania, Sicily: ...with Michael Burke at the Faculty of Letters, Catania University.
  • Upcoming lecture 08/07/14 Milan - Sala degli Alessi, Palazzo Marino, Piazza della Scala: A talk at the symposium on architecture, part of the 2014 FENS programme
  • Upcoming lecture 15-16/11/14 Warsaw (exact timing to be announced): A talk at the "Aspects of Neuroscience" conference
  • Upcoming lecture 05-06/12/14 Heidelberg (exact timing to be announced): Keynote address at the Helmholtz Foundation, Heidelberg University
  • Now available: Perceptual asynchrony for motion by Yu Tung Lo and Semir Zeki in Frontiers in Human Neuroscience.
  • Now available: Varieties of perceptual instability and their neural correlates by Tomohiro Ishizu and Semir Zeki in Neuroimage.
  • Now available: The experience of mathematical beauty and its neural correlates by Semir Zeki, John Romaya, Dionigi Benincasa and Sir Michael Atiyah in Frontiers in Human Neuroscience.
  • Now available: The "Visual Shock" of Francis Bacon: an essay in neuroesthetics by Semir Zeki and Tomohiro Ishizu in Frontiers in Human Neuroscience.
  • Now available: Clive Bell's "Significant Form" and the neurobiology of aesthetics by Semir Zeki is now available under open access in Frontiers in Human Neuroscience.
  • Now available: The brain's specialized systems for aesthetic and perceptual judgments by Semir Zeki and Tomohiro Ishizu is now available under open access in the European Journal of Neuroscience.
  • Now available: Parallelism in the brain's visual form system by Semir Zeki and Yoshihito Shigihara is now available in the European Journal of Neuroscience.
  • Now available: Splendors and Miseries of the Brain is now available in Greek.