The incoming signal will feed into an intensity-detection cortical area consisting of a single row of neurons along the x-direction. The leftmost neuron has the lowest firing threshold and therefore responds to any signal level, while stronger signals sequentially recruit neurons farther to the right to fire. This circuit leverages the firing-threshold increment feature by increasing the limit on neuron firing from left to right. As a result, this produces a spatial readout of intensity so the user can see more neurons fire as signal intensity increases. MP accumulation is disabled in this circuit so repeated inputs don’t cumulatively trigger higher-threshold neurons to fire, which ensures the representation remains proportional to signal intensity.