Research Article

Detection of Fractal Behavior in Temporal Series of Synaptic Quantal Release Events: A Feasibility Study

Figure 3

Graphical comparison of the performance of PG, AF, and DFA methods (same numerical results of Table 1). Colored lines, with different marker shapes, refer to values of parameter (as explained in the legends). Gray, dashed line shows the intercept of the graph, that is, the ideal estimated result. AF provides the most reliable method for quantifying the fractal exponent, given its low sensibility to variations of the parameter and to an almost linear behavior as a function of the expected value of . Notice how DFA estimates diverged from the input value when the fractal coefficient is increased above .
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