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.

Continue to download page.

Demonstrations

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

Starfield

A full colour star field

Latest news - lectures

  • Upcoming lecture Jan 15-16 2015 Singapore: Plenary lecture "The Neurobiology of Aesthetic Experiences and their Implications" at the Second Singapore Science Heritage Conference at Nanyang Technical University.
  • Upcoming lecture Feb 12 2015 11:30 France: Plenary lecture "The Neurobiology of Aesthetic Experiences" at the "Symposium on Behavioral Neurology" at the Institute Pasteur, Paris.
  • Future engagement May 26-28 2015, Greece: Plenary lecture at the meeting on aesthetics at the Aristotle University, Thessaloniki
  • Upcoming discussion May 29 2015, UK: Panel discussion in the context of the "Sculpting beauty: mind and body in ancient Greece" exhibition at the British Museum
  • Future engagement Nov 1-4 2015, USA: Plenary lecture "The objectivity of subjective truths" at The Representational Art Conference, Ventura, California.
  • Future engagement Nov 25 2015 Plenary talk (TTBA) at the Quantum and Nano Computing Systems Centre (QANCENTRE)
  • Future engagement Jul 19-22 2016, Japan: A lecture at the 39th annual meeting of the Japanese Neuroscience Society, held at the Pacifica, Yokohama
  • Future engagement Jul 24-29 2016, Japan: A lecture at the International Congress of Psychology, held at the Pacifica, Yokohama

Latest news - publications

  • Coming Soon:- A massively asynchronous, parallel brain by Semir Zeki will soon appear in Philosophical Transactions of the Royal Society B.
  • Coming Soon:- Area V5 - a microcosm of the visual brain by Semir Zeki
  • Parallel processing of face and house stimuli by V1 and specialized visual areas: a magnetoencephalographic (MEG) study by Yoshihito Shigihara and Semir Zeki is now available in Frontiers in Human Neuroscience
  • A neurobiological enquiry into the origins of our experience of the sublime and beautiful by Tomohiro Ishizu and Semir Zeki is now available in Frontiers in Human Neuroscience
  • Neurobiology and the Humanities by Semir Zeki is now available in Neuron
  • Non-binding relationship between visual features by Dragan Rangelov and Semir Zeki is now available in Frontiers in Human Neuroscience
  • Now available: Parallel processing in the brain's visual form system: An fMRI study by Yoshihito Shigihara and Semir Zeki in Frontiers in Human Neuroscience
  • Now available: Masking reveals parallel form systems in the visual brain by Yu Tung Lo and Semir Zeki in Frontiers in Human Neuroscience
  • Now available: The role of parietal cortex in the formation of colour and motion based concepts by Samuel W. Cheadle and Semir Zeki in Frontiers in Human Neuroscience
  • Now available: Semir Zeki's first book, A Vision of the Brain, can be downloaded here.
  • 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 and Polish (also available in Spanish, Italian and German).