Figure 5. Rate of reliable waveforms. A, Pattern reversal. B, Pattern pulse. C, Rate considering reliable responses for both protocols (Logic AND). D, Rate considering reliable responses for one of the protocols (Logic OR). The rings are shown in two diagrams, a larger one and a smaller one. The larger diagram represents rings R6, R5, R4, and R3 from periphery to center, while the smaller diagram represents rings R2 and R1 from periphery to center.