Fig 5. Precision vs. Recall curves for two sources with varying strength ratios: (a) two sources with the same strength (b) two sources, one with twice the strength as the other (c) two sources, one with three times the strength as the other (d) two sources, one with four times the strength as the other.

Note that while sLORETA has highest peak Precision for all strength ratios, Precision also drops off more steeply with increasing Recall for this algorithm. This pattern is emphasized as the strength ratio increases. All other algorithms have similar performance to each other, with slightly decreasing Precision and Recall as the strength ratio of the sources increases.