Fig. 9

Received reward type encoding. a Significant encoding of received reward type over time in HGA and b single neurons as in Fig. 6b. Red = juice-preferring, blue = secondary-preferring. c Mean ± SEM HGA on all trials where the subject received juice (red) or an increase in reward bar length (blue) as a reward. Gray shaded regions show the time when the juice pump was running (2 × 300 ms epochs). The HG response to juice reward does not align temporally to the two juice boluses, so the difference in response is not related to electrical noise from the pump. d Mean latencies to encode reward type ± 95% CI, separated based on whether the signal was higher for juice or secondary reward. Mean latencies for each subject: x = subject M, square = subject N