Table 7.
Model predictions with two manipulanda: devaluation test phases, lesions of the striato-nigro-striatal connections.
| No food devalued | Second food devalued | |||||||
|---|---|---|---|---|---|---|---|---|
| Mean actions | t-test | Mean actions | t-test | |||||
| L1 | L2 | L1 | L2 | |||||
| CONTROL | 11.88 | 12.05 | t(39) = −0.08 | p = 0.937 | 17.13 | 6.43 | t(39) = 9.30 | p < 0.001 |
| SNS-pre | 10.63 | 9.78 | t(39) = 1.07 | p = 0.291 | 10.43 | 10.08 | t(39) = 0.52 | p = 0.607 |
| SNS-post | 10.93 | 9.68 | t(39) = 1.32 | p = 0.194 | 10.30 | 10.40 | t(39) = −0.15 | p = 0.885 |
Each row refers to one condition and shows the number of actions on each manipulandum averaged over 40 replications of the simulation. CONTROL refers to the condition involving the fully operative model, while the other two rows refer to the conditions where lesions of the striato-nigro-striatal pathway were performed either before (SNS-pre) or after training (SNS-post). The left columns of data refer to tests without any devaluation. The right columns of data refer to tests in which the second food was devalued.