Inverse correlation between the durations of adjacent open and closed intervals at 20°C. (A) Scatter plot of all adjacent open- and closed-interval durations on two different closed-time bases. Data were collected at 40 mV. The inset was taken from the main plot at lower time bases. (B) Closed dwell-time histogram described (solid line) by the sum of five underlying components (dashed lines). The bars indicate the ranges of closed intervals used to select adjacent open intervals for statistical comparison of adjacent interval durations. The closed ranges were selected to bracket the mean duration of intervals in each of the five closed components. The last range was made larger because there was reduced risk of contamination from other components. The mean durations and fractional areas for each of the closed components are indicated. The number of adjacent interval pairs for each range was, from left to right, 1,342, 1,002, 826, 364, and 226. (C) Linear-log plot of mean open times adjacent to closed intervals from each range indicated in B as well as the significance of the difference. Error bars represent SEM.