Table 3.
Summary of electrode activity by region of cortex
| Region | Electrodes | Active electrodes | PMC significant electrodes | Earliest PMC onset (ms) | MSI-subadditive responses (% PMC) | Mean MSI-subadditive onset (ms) | MSI-superadditive responses (% PMC) | Mean MSI-superadditive onset (ms) |
|---|---|---|---|---|---|---|---|---|
| Supramarginal gyrus | 34 | 29 (85) | 17 (59) | 115 | 10 (59) | 260 | 0 | — |
| 34 (100) | 21 (62) | 70 | 8 (38) | 170 | 8 (38) | 226 | ||
| 8 overlap | ||||||||
| Superior parietal | 16 | 8 (50) | 4 (50) | 125 | 0 | — | 1(25) | 125 |
| 8 (50) | 7 (88) | 80 | 3 (43) | 213 | 0 | — | ||
| Rostral middle frontal | 23 | 13 (57) | 4 (31) | 101 | 2 (50) | 280 | 0 | — |
| 13 (57) | 2 (15) | 170 | 0 | — | 1 (50) | 277 | ||
| Inferior parietal | 38 | 18 (47) | 9 (50) | 150 | 1 (11) | 150 | 0 | — |
| 29 (76) | 18 (62) | 167 | 3 (17) | 167 | 6 (33) | 283 | ||
| 0 overlap | ||||||||
| Lateral occipital | 29 | 25 (86) | 12 (48) | 95 | 0 | — | 0 | — |
| 25 (86) | 8 (32) | 147 | 0 | — | 0 | — | ||
| Precentral gyrus | 32 | 27 (84) | 11 (41) | 160 | 0 | — | 0 | — |
| 32 (100) | 18 (56) | 65 | 1 (5) | 330 | 0 | — | ||
| Postcentral gyrus | 42 | 35 (83) | 7 (20) | 102 | 1 (14) | 280 | 0 | — |
| 37 (88) | 18 (49) | 78 | 3 (17) | 327 | 0 | — | ||
| 1 overlap | ||||||||
| Caudal middle temporal | 22 | 14 (64) | 6 (43) | 245 | 1 (17) | 245 | 0 | — |
| 15 (68) | 9 (60) | 180 | 2 (22) | 378 | 4 (44) | 262 | ||
| 1 overlap | ||||||||
| Caudal middle frontal | 14 | 9 (64) | 2 (22) | 317 | 0 | — | 0 | — |
| 10 (71) | 4 (40) | 102 | 0 | — | 1 (25) | 287 | ||
| Cuneus | 10 | 10 (100) | 3 (30) | 140 | 1 (33) | 145 | 0 | — |
| 10 (100) | 6 (60) | 175 | 1 (17) | 180 | 1 (17) | 330 | ||
| 1 overlap | ||||||||
| Fusiform | 18 | 7 (39) | 3 (43) | 187 | 1 (33) | 313 | 0 | — |
| 12 (66) | 4 (33) | 145 | 0 | — | 2 (50) | 170 | ||
| Inferior temporal | 34 | 11 (32) | 7 (64) | 162 | 0 | — | 0 | — |
| 15 (44) | 3 (20) | 150 | 1 (33) | 235 | 0 | — | ||
| Lateral orbitofrontal | 12 | 6 (50) | 2 (33) | 305 | 0 | — | 0 | — |
| 10 (83) | 0 | — | 0 | — | 0 | — | ||
| Lingual | 12 | 7 (58) | 2 (29) | 185 | 0 | — | 0 | — |
| 8 (66) | 6 (75) | 125 | 1 (17) | 280 | 1 (17) | 325 | ||
| Mid-middle temporal | 22 | 8 (36) | 1 (13) | 88 | 0 | — | 0 | — |
| 14 (63) | 4 (29) | 100 | 0 | — | 0 | — | ||
| Rostral middle temporal | 21 | 6 (29) | 0 | — | 0 | — | 0 | — |
| 9 (42) | 1 (11) | 170 | 0 | — | 0 | — | ||
| Pars opercularis | 10 | 8 (80) | 3 (38) | 140 | 0 | — | 0 | — |
| 9 (90) | 5 (55) | 170 | 0 | — | 0 | — | ||
| Pars triangularis | 12 | 6 (50) | 3 (50) | 85 | 0 | — | 0 | — |
| 9 (75) | 1 (11) | 107 | 1 (100) | 385 | 1 (100) | 275 | ||
| Superior frontal | 23 | 13 (57) | 3 (23) | 198 | 0 | — | 0 | — |
| 17 (74) | 5 (29) | 217 | 1 (20) | 255 | 1 (20) | 245 | ||
| Total | 424 | 260 (61) | 99 (38) | 17 (17) | 1 (1) | |||
| 316 (74) | 140 (44) | 25 (18) | 26 (19) | |||||
| 11 overlap |
Value are given as number (%), unless otherwise stated. Numbers in bold indicate values for HGP responses, and numbers in italics indicate values for the aLFP waveforms. Cortical regions are defined by an automated cortical parcellation method (Desikan et al., 2006) from FreeSurfer software.