Inter-turn intervals in Paramecium caudatum display an exponential distribution

Figures & data

Figure 1. Distributions of inter-turn intervals. The smoothed inverse frequency distributions (in black) of inter-turn intervals, with 3 models fitting the distribution: Power law (pink), Exponential (green), Stretched Exponential (blue). The observed data have been smoothed using symmetric Gaussian smoothing, but the curve-fitting was based on the raw, unsmoothed data. The x- and y-axis measures are on a log scale. The inset figures shows the binned frequency distributions of inter-turn intervals.

Table 1. The performance of curve fits of inter-turn intervals. AIC = Akaike Information Criterion. Curve fits were performed using the maximum-likelihood method on the inverse cumulative distribution.

Data Model	AIC	R Squared	P Value	AIC Weight
Power Law	16748.03	0.999077	<2.2e-16	0.00
Exponential	13997.04	0.99942	<2.2e-16	1
Stretched Exponential	24143.4	0.978865	5.361e-06	0.00