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. 2013 Jul 1;7:85. doi: 10.3389/fncom.2013.00085

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Copyright © 2013 Kilpatrick.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.

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Switching induced by noise and depression. (A) Single realization of the network (Equation 6) with depression and noise. Activity variables u_R (black) and u_L (blue) stay close to attractors at 0 and 1, aside from depression or noise induced switching. Depression variables q_R (red) and q_L (green) slowly exponentially change in response to the states of u_R and u_L. (B) Right and (C) left dominance time distributions fit with gamma distributions (Equation 30), in the network (Equation 6) with depression and noise in the case of asymmetric inputs I_R = 0.82 and I_L = 0.78, sampled over 1000 s. The right population has a longer mean dominance time. Other parameters are β = 0.2, τ = 50, and ε = 0.036.