Comparison between interpolated data points and pulse-frequency-versus-objective-price trade-off functions derived from the surface fits.

<p>The solid line is the contour in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0182120#pone.0182120.g006" target="_blank">Fig 6</a> representing mid-range time allocation (half-way between <i>T</i>_<i>min</i> and <i>T</i>_<i>max</i>) by rat F16. The corresponding data points were interpolated by means of spline fits to the data from the pulse-frequency, price, and radial pseudo-sweeps. Analogous plots for the remaining rats are shown in Figs M, N, O, Q and R in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0182120#pone.0182120.s001" target="_blank">S1 File</a>.