Region details for regions common to ordinal and cardinal processing of nonsymbolic numbers
| Region | Talairach coordinates | Vol. (mm3) | Condition | % Signal change: mean (SE) | DotOrd ≠ DotCard | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| x | y | z | NumOrd | DotOrd | NumCard | DotCard | ||||
| R. IPSa | 40 | −37 | 41 | 3702 | Number | 0.53 (0.05) | 0.73 (0.06) | 0.45 (0.04) | 0.59 (0.06) | p < 0.001 |
| Control | 0.53 (0.05) | 0.52 (0.05) | 0.38 (0.06) | 0.39 (0.05) | ||||||
| R. PPC | 27 | −72 | 26 | 473 | Number | 0.49 (0.08) | 0.79 (0.09) | 0.40 (0.08) | 0.71 (0.08) | p = 0.149 |
| Control | 0.58 (0.08) | 0.61 (0.08) | 0.37 (0.08) | 0.48 (0.09) | ||||||
| ACCd | 2 | 19 | 42 | 4707 | Number | 0.50 (0.05) | 0.63 (0.05) | 0.30 (0.04) | 0.46 (0.05) | p < 0.001 |
| Control | 0.40 (0.06) | 0.39 (0.05) | 0.26 (0.06) | 0.25 (0.06) | ||||||
| R. DLPFCa | 39 | 30 | 22 | 2166 | Number | 0.37 (0.05) | 0.56 (0.05) | 0.26 (0.04) | 0.40 (0.05) | p < 0.001 |
| Control | 0.38 (0.05) | 0.36 (0.05) | 0.24 (0.06) | 0.23 (0.05) | ||||||
| R. DLPFCp | 45 | 4 | 27 | 1192 | Number | 0.73 (0.06) | 0.92 (0.07) | 0.53 (0.05) | 0.75 (0.07) | p < 0.001 |
| Control | 0.73 (0.07) | 0.72 (0.07) | 0.56 (0.07) | 0.55 (0.07) | ||||||
| R.IFGa | 39 | 44 | 2 | 343 | Number | 0.00 (0.06) | 0.18 (0.06) | 0.05 (0.04) | 0.09 (0.06) | p = 0.051 |
| Control | 0.02 (0.05) | −0.04 (0.06) | 0.05 (0.06) | −0.06 (0.05) | ||||||
| R. INSa | 31 | 18 | 4 | 1667 | Number | 0.38 (0.05) | 0.50 (0.04) | 0.24 (0.04) | 0.38 (0.05) | p < 0.001 |
| Control | 0.31 (0.05) | 0.30 (0.05) | 0.18 (0.06) | 0.15 (0.04) | ||||||
| L. INSa | −32 | 18 | 4 | 721 | Number | 0.41 (0.05) | 0.52 (0.04) | 0.24 (0.04) | 0.39 (0.05) | p = 0.001 |
| Control | 0.35 (0.05) | 0.30 (0.05) | 0.19 (0.06) | 0.19 (0.05) | ||||||
| L. FFGp | −43 | −68 | −5 | 397 | Number | 0.83 (0.09) | 0.84 (0.08) | 0.77 (0.08) | 0.94 (0.09) | p = 0.042 |
| Control | 0.82 (0.09) | 0.74 (0.09) | 0.68 (0.08) | 0.67 (0.08) | ||||||
| L. CLS | −9 | −74 | 8 | 624 | Number | −0.23 (0.08) | −0.14 (0.08) | −0.21 (0.06) | −0.08 (0.08) | p = 0.137 |
| Control | −0.22 (0.08) | −0.27 (0.08) | −0.33 (0.08) | −0.32 (0.07) | ||||||
Region details for regions common to ordinal and cardinal processing of nonsymbolic numbers (see also blue regions in Figure 4). Anatomical information is shown on the left and mean neural activity on the middle. Activity is shown for each experimental (Number) and control condition. The rightmost column shows the result of testing whether DotOrd activity was greater than DotCard activity in a given region (see also red and purple regions in Figure 4). PPC, Posterior parietal cortex; FFG, fusiform gyrus; L, left; R, right.