Research
Coverage, continuity, and visual cortical architecture
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* Corresponding author: Wolfgang Keil wolfgang@nld.ds.mpg.de
1 Max-Planck-Institute for Dynamics and Self-organization, Am Fassberg 17, D-37077 Göttingen, Germany
2 Bernstein Center for Computational Neuroscience, Am Fassberg 17, D-37077 Göttingen, Germany
3 Georg-August-University, Faculty of Physics, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
4 Kavli Institute for Theoretical Physics, Santa Barbara, CA 93106-4030, USA
Neural Systems & Circuits 2011, 1:17 doi:10.1186/2042-1001-1-17
Published: 29 December 2011Additional files
Rhombic pinwheel crystallization in the EN model. The movie shows OPMs (left) as well as their power spectrum (right). In the left panel, colors encode preferred orientation and brightness orientation selectivity. The simulation of the EN model was obtained by gradient descent dynamics with circular stimulus ensemble and fixed retinotopy. The simulation was started from the unselective fixed point z(x, t = 0) = 0 (parameters: r = 0.1, σ/Λ = 0.1 (η = 0.67)).
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Pinwheel annihilation in the EN model. The movie shows OPMs (left) as well as their power spectrum (right). In the left panel, colors encode preferred orientation and brightness orientation selectivity. The simulation of the EN model was obtained by gradient descent dynamics with circular stimulus ensemble and fixed retinotopy. The simulation was started from the unselective fixed point z(x, t = 0) = 0 (parameters: r = 0.1, σ/Λ = 0.3 (η = 0.028)).
Format: MP4 Size: 5.4MB Download file
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Convergence to fractured stripes in the EN model. The movie shows OPMs (left) as well as their power spectrum (right). In the left panel, colors encode preferred orientation and brightness orientation selectivity. The simulation of the EN model was obtained by gradient descent dynamics with fixed retinotopy. The simulation was started from the unselective fixed point z(x, t = 0) = 0 (parameters: r = 0.1, σ/Λ = 0.2 (η = 0.2), s4 = 6).
Format: MP4 Size: 7.9MB Download file
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Hexagonal pinwheel crystallization in the EN model. The movie shows OPMs (left) as well as their power spectrum (right). In the left panel, colors encode preferred orientation and brightness orientation selectivity. The simulation of the EN model was obtained by gradient descent dynamics with fixed retinotopy. The simulation was started from the unselective fixed point z(x, t = 0) = 0 (parameters: r = 0.1, σ/Λ = 0.3 (η = 0.028), s4 = 8).
Format: MP4 Size: 7.9MB Download file
Playing the movie within this page requires QuickTime 6 or later and JavaScript. Read more