Fig. 6.

Neurons encoded the outcome of the preceding trial. A: example of a neuron that fired more spikes if the preceding response was correct (Post-Cor) compared with if it was an error (Post-Err). B: fraction of neurons that was sensitive to the outcome of the preceding trial during the period when rats entered the choice ports. C: normalized difference in spike counts around choice port entry for trials that were preceded by correct and incorrect responses. A few cells fired persistently at distinct rates throughout the period of choice (cell in A and those indicated by arrowheads in C). D–F: same plots as A–C for the period of reward port entry and fluid consumption.