Figure 4 : Simulated and empirical effects of neurostimulation on behaviour.

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

Figure 4

(A) In line with model predictions (left panel), medial frontal stimulation (depolarization) made decisions less sensitive to differences in expected value between choice options, i.e. increased choice stochasticity. In line with the modeled behaviour (left), mean % correct choices (based on higher expected values calculated as reward magnitude * modelled reward probability) was reduced during medial stimulation (depolarization, right). (B) Learning rates were not affected. Error bars indicate 1 SEM, asterisks indicate reliable condition differences at p < 0.05.