Figure 5 : Logistic regression coefficients of pre-stimulus bias and expected value differences predicting accuracy of simulated choices.

From: Selective alteration of human value decisions with medial frontal tDCS is predicted by changes in attractor dynamics

Figure 5

In the depolarizing stimulation condition, the pre-stimulus pyramidal firing rate bias (correct-incorrect) had a greater influence on simulated choice accuracy than in the control condition, while during hyperpolarizing stimulation the influence of pre-stimulus bias on choice accuracy was reduced compared to control. In contrast, the influence of the expected value difference on choice accuracy was reduced in the depolarizing condition compared to control whereas it didn’t differ reliably in the hyperpolarizing stimulation condition. Thus, hyperpolarization increased the relative bearing of expected value differences on choice accuracy as compared to no stimulation control. In contrast, depolarization increased the relative influence of noisy pre-stimulus fluctuations on choice. Error bars indicate 1 SEM, asterisks indicate reliable condition differences at p < 0.05 (Bonferroni corrected).