Stochastic Resonance: Optimal Noise for Signal Detection

Noise σ: 0.50
Signal A: 0.60
Frequency f: 0.15

Stochastic resonance: adding an optimal amount of noise to a subthreshold periodic signal (A < threshold) maximizes the signal-to-noise ratio of threshold crossings. Neither too little nor too much noise is optimal — the SNR peaks at an intermediate noise level.