Neural Mechanisms Underlying Motivation of Mental Versus Physical Effort (original) (raw)
Figure 3
Neural correlates of performance effects depending on effort type (motor or cognitive demand).
(A) SPM show activations obtained with GLM2 for the contrast between high and low incentives, the correlation with performance levels, and the conjunction between these two effects. (B) SPM shows regions parametrically modulated by performance level during both motor and cognitive effort (conjunction of mC and Mc conditions). (C) Graphs show regression coefficients (betas) obtained in the ventral striatum (VS) for the parametric modulation by performance levels during effort exertion in mC and Mc conditions, separately. Bars represent mean ± inter-participant standard errors. Dotted line indicates non-significant (NS) difference (two-tailed paired t test, _p_>0.05). (D) Scatter plots illustrate the inter-participant correlation between behavioral and neural incentive effects (1€ versus 1c). Solid line represents significant correlation (p<0.05).