Figure 3.

An example of neural activity from a single vPFC neuron during the same-different task. In (A), the reference stimulus was the prototype spoken word bad. In (B), the reference stimulus was the prototype spoken word dad. For both panels, the rasters and spike-density histograms are aligned relative to the onset of the test stimulus. The morph value of the test stimulus is indicated by color as shown by the color bar: 0% morphs are the lightest blue color and 100% morphs are the purple color. When the test stimulus was a 100% morph, it was identical to the reference stimulus. The arrows in (A) indicate the approximate times of each of the reference stimuli. In these two panels, only successful trials are shown.