A: ROC values for each of the recorded 455 PFC neurons are shown, with the same neuron depicted in the same row on the left and right panels. Bright orange colors indicate high category sensitivity. Neurons identified previously as sensitive to the Cats vs. Dogs category distinction (via t-test) are sorted on max ROC (left panel, below the dashed white line). The same neurons have the highest ROC values for the Sports Cars vs. Sedans category distinction (right panel). B: Data as in panel A now realigned on the max ROC for Car sensitive neurons. Again, the majority of selectivity for both category distinctions is in the lower portion of the panels below the dashed white line, even though the Animal ROCs are aligned to match the Car sensitivity. Thus, the majority of PFC category sensitive neurons multi-task and encode both category distinctions.