Table 3 Model parameters. Shown are parameters (mean ± SEM) of the full and three reduced models (model 1, sustained effect of actual reward only; model 2, sustained and transient effects of actual reward; model 3, sustained effects of actual and fictive rewards). AIC and BIC values are also shown. All models included three bias terms [constant increment of chosen value (Vq), stay bias (bst,) and left-choice bias (bL)]
Model 1 | Model 2 | Model 3 | Full model | |
|---|---|---|---|---|
αactual | 0.227 ± 0.086 | 0.133 ± 0.006 | 0.454 ± 0.187 | 0.160 ± 0.009 |
αfictive | – | – | 0.312 ± 0.173 | 0.037 ± 0.013 |
kactual | – | 0.447 ± 0.095 | – | 0.461 ± 0.097 |
kfictive | – | – | – | 0.323 ± 0.090 |
β | 0.501 ± 0.051 | 0.138 ± 0.055 | 0.541 ± 0.067 | 0.076 ± 0.037 |
bst | −0.661 ± 0.137 | −1.561 ± 0.147 | −1.780 ± 1.067 | −1.037 ± 0.151 |
bL | 0.563 ± 0.274 | 0.485 ± 0.214 | 0.729 ± 0.330 | 0.493 ± 0.207 |
Vq | 0.186 ± 0.119 | 0.353 ± 0.038 | 1.459 ± 1.129 | 0.439 ± 0.042 |
AIC | 1782 ± 136 | 1751 ± 142 | 1752 ± 141 | 1723 ± 142 |
BIC | 1809 ± 136 | 1784 ± 142 | 1784 ± 141 | 1767 ± 142 |
Number of parameters | 5 | 6 | 6 | 8 |
