Time series for circuit measurements (upper graph) and simulations (lower) for different noise strengths showing OR/NOR LSR.

<p>Panel (b) has noise level within the optimal range for displaying OR/NOR characteristics. Noise strengths in simulation and in circuit are: (a) and , (b) and , (c) and . Voltages and times for the circuit measurements have been converted to dimensionless quantities as described in the text.