Figure 6.

Summary of $V_{\text{m}}^{\text{S}2}$ response types for all cells (n = 57)

A, histogram summarizing the number of occurrences of various response types of $V_{\text{m}}^{\text{S}2}$ over the entire range of ${\hat{V}}_{\text{m}}^{\text{S}2}$ values. The inset shows sub-distribution of type IV responses into parallel and non-parallel time courses. The symbols in B represent frequency of occurrence of various response types for each bin. The curves drawn by eye through these symbols can be used to estimate the ${\hat{V}}_{\text{m}}^{\text{S}2}$ thresholds for occurrence of various response types. Inset in B is a frequency plot corresponding to inset of A, and depicts occurrence of non-parallel responses as a function of ${\hat{V}}_{\text{m}}^{\text{S}2}$. The curve is a second degree polynomial fit through the data. Note that a larger bin size was chosen for the insets to enhance the confidence in tracking the trend of non-parallel type IV responses with increasing ${\hat{V}}_{\text{m}}^{\text{S}2}$.