Article Figures & Data
Figures
- Figure 1.
Sagittal brain section illustrating ACC activation in high-conflict versus low-conflict trials. A, High versus low conflict, all trials. B, High versus low conflict, only no-response trials. C, Conflict directly assessed by using participants' ratings of similarity of attractiveness for each pair. These ratings account for the covariates design in the SPM general linear model (parametric analysis). Only no-response trials are included.
- Figure 2.
Averaged and fitted time course curves of fMRI signal (BOLD response). In all panels, the vertical blue dashed line corresponds to the appearances of the faces. TR, 1.8 s. A, Signal within the ACC for the no response trials (red, high conflict; black, low conflict). Solid lines show activation for all trials combined, with dashed lines showing activation only for trials with the shortest decision phase duration (3.6 s). B, Signal within the ACC (orange) and the primary motor cortex face area (purple); solid lines correspond to trials where a verbal motor response is required and dashed lines to trials without an overt response. C, Signal within dorsolateral prefrontal cortex (DLPFC) for the no response trials (red, high conflict; black, low conflict. Solid lines show activation for all trials combined, with dashed lines showing activation only for trials with the shortest decision phase duration (3.6 s). D, Signal within FEF for the no response trials (red, high conflict; black, low conflict). Solid lines show activation for all trials combined, with dashed lines showing activation only for trials with the shortest decision phase duration (3.6 s). E, Signal within the ACC for the no response trials [green, high conflict (attractive); blue, high conflict (unattractive); black, low conflict].
Tables
Location Laterality Brodmann's areas Talairach's coordinates t values Cluster size (voxels) x y z High- versus low-conflict contrasts Prefrontal cortex Anterior cingulate cortex R and L BA 6/32 −3 20 43 4.49 253 Medial frontal cortex R and L BA 9/32 −6 39 23 3.61 253 Lateral prefrontal cortex R BA 9 42 4 27 6.22 71 Orbito frontal cortex R BA 11/47 39 32 4 5.27 179 Others Fusiform gyrus R BA 37 42 −61 7 4.63 61 Striate visual cortex L BA 17/18 −9 −79 1 4.73 57 Conflict parametric analysis Prefrontal cortex Anterior cingulate cortex R and L BA 32 3 20 49 4.47 242 Anterior cingulate cortex R and L BA 32 6 29 1 4.78 94 Medial frontal cortex R and L BA 9/32 9 36 26 4.03 242 Lateral prefrontal cortex R BA 9/46 48 22 24 5.22 341 Orbito frontal cortex R BA 11/47 30 40 −12 4.98 103 Anterior insular cortex L BA 44/47 −39 23 2 4.90 163 Others Fusiform gyrus R BA 37 45 −64 7 5.11 143 Fusiform gyrus L BA 37 −50 −64 6 5.25 161 Striate visual cortex R BA 17/18 18 −79 1 5.36 93 Parahippocampal gyrus L BA 35 27 −24 −14 6.51 88 -
Areas showing greater activation for high-conflict trials than low-conflict trials, on trials where no response was required. The top half of the table describes activity as a result of the direct contrast of high versus low conflict, whereas the bottom half describes areas active when examining conflict parametrically based on participants responses. t value thresholds of p < 0.001 with a spatial extent threshold of 20 contiguous voxels.
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