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. 2014 Aug 1;9(8):e103877. doi: 10.1371/journal.pone.0103877

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© 2014 Skeldon 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) Diagrammatic description of the PR model showing the links between the VLPO, MA, the homeostatic and the circadian processes. (b), (c) and (d) show typical timeseries for the level of the homeostat, , and the firing rates of the MA and VLPO, and , respectively. The times where sleep occurs are shaded.

Inline graphic — (a) Diagrammatic description of the PR model showing the links between the VLPO, MA, the homeostatic and the circadian processes. (b), (c) and (d) show typical timeseries for the level of the homeostat, , and the firing rates of the MA and VLPO, and , respectively. The times where sleep occurs are shaded.