Table 2.
Percentage of recorded neurons with significant encoding of Stimulus (left/right position of the pictures), Action (the animal’s choice: left or right) or Outcome (the type of juice associated with the choice) during the delivery of the second reward up until the time of the chosen action (based on the subject’s median reaction time for each task). Neurons are classified according to whether they showed a significant main effect (with no significant interactions) or a significant interaction. Note that for the AO task, there were no pictures on the screen, and consequently the Stimulus parameter was not manipulated. Bold indicates that the percentage of selective neurons was significantly higher than that expected by chance (binomial test, p < 0.05).
| Selectivity | Area | AO Task | SO Task |
|---|---|---|---|
| Stimulus | OFC | -- | 1 |
| ACC | -- | 0 | |
| Action | OFC | 10* | 20* |
| ACC | 16* | 10* | |
| Outcome | OFC | 9 | 7 |
| ACC | 10 | 6 | |
| S x A | OFC | -- | 12 |
| ACC | -- | 18 | |
| S x O | OFC | -- | 2 |
| ACC | -- | 4 | |
| A x O | OFC | 3 | 5 |
| ACC | 5 | 7 | |
| S x A x O | OFC | -- | 8 |
| ACC | -- | 10 |
Asterisk indicates that the proportion of selective neurons was significantly different between the two areas (χ2 tests, p < 0.05).