Quantifying the Relative Contributions of Divisive and Subtractive Feedback to Rhythm Generation
Figure 6
Variations of CAP and CSP with network connectivity and cell excitability (for τθ/τs = 1, g = 1).
CAP increases with increased synaptic connectivity, as would be expected from the correlative measure (Eq 4), with equal contributions from both processes (CAP = 0) when (w/g) (τθ/τs) = 1. In contrast, CSP is always close to -1, the subtractive feedback process sets the length of the silent phase regardless of the value of w. Finally, both CAP and CSP are unaffected by changes in θ0, showing that cell excitability does not influence which process controls episodic activity.