Fig. 5. Jamming avoidance responses (JARs) with 1:2 `electric organ discharge (EOD) to pulse' period ratios: natural and simulated. Interval and delay plots. EODs represented by intervals (black circles); artificial pulses represented by delays relative to the EOD (asterisks with lines). (A) Live fish: mean interval=68.0 ms; pulse interval=141.3 ms. (B) Failure of incomplete model Z, which responds only if pulses occur at consecutive sensitive windows. For B and C, fast train M^*=36.0 ms; slow train M^*=73.0 ms. (C) Success of complete model Z+, which responds to pulses arriving either at consecutive or every other sensitive window.