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. 2013 Sep 5;7:138. doi: 10.3389/fncir.2013.00138

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Copyright © 2013 Latorre, Aguirre, Rabinovich and Varona.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The source-sink phenomena appears in the IO network model when a cluster of neurons is set to have a high rate of spiking activity while another is set in a subthreshold oscillatory regime. In the networks illustrated in the figure, the number of connections among the nearest neighbors is 12 with g_c = 0.01 mS/cm². Sequences develop in time from left to right with a time interval between frames of 10 ms. Right panel shows the approximate location of the source (cluster with highly excitable neurons, I_inj = 0.5 μA/cm²) and the sink, (cluster with low excitable neurons, σ = 2 and I_inj = 0 μA/cm²). The difference between the top and bottom panel is the location of the sink cluster (the source is the same in both cases).