Performance
SNR (single): –
SNR (array): –
Gain: –×
Detection rate: –%
Stochastic resonance (SR): subthreshold signals + noise → detectable output. Array-enhanced SR (Lindner 1995): M parallel threshold neurons, average output. SNR scales as √M for independent noise — collective benefit. Observed in: mechanoreceptors, hair cells, crayfish tails, financial data.