FIGURE 5.

OZ and Nengo neuron tuning curves. (A) Tuning curves of eight 1D hardware-based OZ neurons. (B) Tuning curves of four 2D hardware-based OZ neurons. (C) Tuning curves of eight NEF-based simulated neurons, directly computed with Nengo. (D) Four tunning curves of four 2D simulated neurons (D). In panels A,C, each color stands for one neuron spiking at a specific rate in response to an input voltage (x₁). In OZ-based 2D representation, V_w for x₁ was held constant at 2.5 V, V_ref at 0.4 V, and V_lk at 0.729. V_w values for x₂ were 3.3, 2.8, 2.6, and 2.4 V, left to right, respectively.