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. 2012 Dec 5;7(12):e50189. doi: 10.1371/journal.pone.0050189

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© 2012 olde Scheper et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A Activity of two neurons and showing the LCM at the fundamental frequency of 11.9 Hz (84 ms) for a network constructed using the Hodgkin-Huxley conductance model. B Activity of neurons and showing the fundamental frequency of 1.85 Hz, using the Fitzhugh-Nagumo model. C The network of HH neurons and synaptic transmission as in panel lbfa, but without adaptation. The neurons function as simple coincidence detectors and do not converge to the LCM. Due to the difference in periodicity of the two neurons they will eventually go completely out of phase. D Phase diagram of the relative change in membrane voltage for the HH network versus the relative change in timing induced by deterministic LTD adaptation. Shown are the stable phase differences for neurons (blue) and (green) for at least 20 periods. The phase difference was calculated by determining the timing differences of spiking events for individual periods between synapses connecting and of the adapted network and the non-adapted network. The corresponding difference in amplitude of the membrane activity for each event provides the relative change.

Inline graphic — A Activity of two neurons and showing the LCM at the fundamental frequency of 11.9 Hz (84 ms) for a network constructed using the Hodgkin-Huxley conductance model. B Activity of neurons and showing the fundamental frequency of 1.85 Hz, using the Fitzhugh-Nagumo model. C The network of HH neurons and synaptic transmission as in panel lbfa, but without adaptation. The neurons function as simple coincidence detectors and do not converge to the LCM. Due to the difference in periodicity of the two neurons they will eventually go completely out of phase. D Phase diagram of the relative change in membrane voltage for the HH network versus the relative change in timing induced by deterministic LTD adaptation. Shown are the stable phase differences for neurons (blue) and (green) for at least 20 periods. The phase difference was calculated by determining the timing differences of spiking events for individual periods between synapses connecting and of the adapted network and the non-adapted network. The corresponding difference in amplitude of the membrane activity for each event provides the relative change.