Simulating Dynamics of Circulation in the Awake State and Different Stages of Sleep Using Non-autonomous Mathematical Model With Time Delay

Figures

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  FIGURE 1. Structure of the model. Elements of the autonomic control are shown in black. Red color shows the inputs from the higher nervous centers.

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  FIGURE 2. Model time series of arterial pressure and interbeat intervals. (A) Arterial pressure in the awake state (bold black line) and in REM sleep (thin red line). (B) Arterial pressure in the awake state (bold black line) and in non-REM sleep (thin blue line). (C) Interbeat intervals in the awake state (bold black line) and in REM sleep (thin red line). (D) Interbeat intervals in the awake state (bold black line) and in non-REM sleep (thin blue line).

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  FIGURE 3. Logarithmic power spectra calculated from the model (A) and experimental (B) interbeat intervals in the awake state (bold black line), in REM sleep (thin red line), and in stage 4 of non-REM sleep (thin blue line).