Article Figures & Data
Figures
- Fig. 1.
Behavioral data. A: schematic drawing of a hand performing the stereotyped forefinger movements in the form of a well-shaped “U.” B: subjective mean levels of attention (and SDs) to the finger movements in all subjects in all 3 active conditions (C1, C2, and C3) as assessed by the analog scale. Note the significant statistical decrease in the level of attention to the finger movement between each condition as assessed by a 2-tailedt-test (* P < 0.05; ** P < 0.01).
- Fig. 2.
Overlap of the group activation foci in the primary motor cortex with the probabilistic cytoarchitectonic maps of areas 4a (anterior) and 4p (posterior). The activated foci are in blue, the area 4a in red, and the area 4p in yellow. The different sagittal transsection planes through the central sulcus (CS) show the center of activity of the focus modulated by attention in the area 4p (top panel) and the center of activity of the focus not modulated by attention in the area 4a (bottom panel). The percentage of the overlap between the respective cytoarchitectonic region and the activated focus are illustrated in the bottom left corner. The percentage of the mean signal changes, and the SDs in the corresponding activated area are depicted in the bottom right corner. A: the focus modulated by the level of attention overlapped by 92% with the 50%-isocontour of the area 4p. Talairach coordinates (x = −36,y = −20, z = 48).B: the focus not modulated by attention overlapped by 74% with the 50%-isocontour of the area 4a. Talairach coordinates (x = −48, y = −8,z = 56).
Tables
- Table 1.
Significant activation areas
Activated Area Stereotactic Coordinates Z-Score A. Conjunction of active conditions versus control Area 4 −48, −8, 56 5, 1 Cerebellum 12, −56, −16 3, 9 Extrastriatal r 20, −96, 12 5, 3 Extrastratla l −30, −92, 8 3, 8 B. Parametric changes in area 4 4a, not modulated −48, −8, 56 5, 1 4p, modulated −36, −20, 48 5, 3 C. Motor-directed attention Prefrontal r 20, 60, 1 3, 2 vPMC r 56, 16, 8 3, 3 Superior parietal r 36, −48, 62 3, 8 Secondary sensory r 56, −28, 24 4, 3 Intraparietal r 28, −56, 52 3, 3 Temporo-occipital r 44, −60, 16 3, 2 D. Visually directed attention DLPC r 44, 40, 28 3, 3 vPMC l −56, 8, 40 3, 8 Posterior parietal r 56, −52, 44 3, 5 Precuneus r 4, −56, 48 3, 7 Fusiform gyrus r 48, −86, −20 3, 4 Fusiform gyrus l −52, −56, −12 3, 6 Extrastriatal r 32, −76, −16 3, 9 Extrastriatal l −16, −84, −12 3, 7 Primary visual l −8, −84, 8 4, 7 -
Stereotactic coordinates in mm in Talairach apace (Talairach and Turnoux 1988). A: conjunction analysis of all active conditions in contrast to the control condition (condition 1 + condition 2 +condition 3 > condition 4) showing the common activation areas related to right index finger movements.B: parametric evaluation of neural activity in Area 4 that was modulated (area 4p: posterior) and not modulated (area 4a: anterior) by attention to finger movement. C: motor-directed attention (condition 1 > condition 2 +condition 3). D: visually directed attention (condition 2 + condition 3 >condition 1). Area 4, Brodman's Area 4; modulated, modulated by attention to action; not modulated, not modulated by attention to action; vPMC, ventral premotor cortex; DLPF, dorsolateral prefrontal cortex.
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