Table 1.
Patient demographics
| Patient demographics | ||||||
|---|---|---|---|---|---|---|
| No. | MRI finding | Age at implantation | Seizure frequency per month | Surgery performed | Brodmann's areas covered with electrodes | Number of electrodes |
| P1 | Normal | 22 | 14 | R‐AH | N = 20 (BA: 1, 2, 3, 4, 6, 8, 9, 10, 11, 20, 21, 22, 24, 31, 35, 37, 39, 42, 44, 46) | 112 |
| P2 | R temporal lobe encephalomalacia | 47 | 1 | R‐AHTL | N = 14 (BA: 2, 3, 4, 9, 10, 20, 21, 37, 39, 42, 43, 44, 45, 46) | 74 |
| P3 | Normal | 48 | 8 | R‐AH | N = 14 (BA: 1, 2, 3, 4, 6, 8, 9, 19, 41, 42, 43, 44, 45, 46) | 86 |
| P4 | R temporo‐polar dysgenesis | 35 | 30 | None | N = 3 (BA: 22, 38, 44) | 23 |
| P5 | L occipito‐temporal dysplasia | 23 | 30 | L‐occipito‐temporal topectomy | N = 19 (BA: 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 21, 22, 34, 38, 39, 40, 42, 43, 45) | 110 |
| P6 | L temporal encephalomalacia | 55 | 6 | L‐temporal lateral lesionectomy | N = 17 (BA: 1, 2, 4, 6, 8, 9, 10, 11, 19, 20, 40, 41, 42, 44, 45, 46, 47) | 81 |
| P7 | Normal | 36 | 1 | None | N = 10 (BA: 3, 6, 9, 18, 37, 38, 43, 44, 45, 46) | 95 |
| P8 | L frontal tumor | 38 | 1.5 | L‐frontal lesionectomy | N = 10 (BA: 5, 7, 9, 10, 21, 22, 40, 42, 44, 46 | 66 |
| P9 | R cingular and frontal CD | 20 | 6 | R‐frontal topectomy | N = 2 (BA: 10, 44) | 33 |
| P10 | R frontal encephalomalacia | 18 | 10 | R‐frontal lesionectomy | N = 7 (BA: 3, 4, 6, 7, 8, 10, 46) | 29 |
| P11 | L temporal arachnoid cyst | 60 | 10 | L‐temporal lateral topectomy | N = 19 (BA: 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 37, 39, 40, 42, 43, 44, 45, 46, 47 | 97 |
| P12 | R multiple gangliogliomas | 25 | 1.5 | R‐multiple lesionectomies | N = 14 (BA: 2, 3, 4, 5, 6, 9, 17, 18, 19, 22, 29, 31, 39, 42) | 100 |
| P13 | Normal | 15 | 8 | None | N = 17 (BA: 2, 4, 6, 8, 9, 10, 11, 19, 20, 28, 37, 38, 39, 44, 45, 46, 47) | 113 |
| P14 | R occipito‐temporal encephalomalacia | 31 | 2.5 | R‐AHTL | N = 10 (BA: 1, 2, 3, 4, 7, 11, 42, 44, 45, 47) | 79 |
| P15 | Normal | 30 | 0.5 | R‐temporo‐parietal junction and insular topectomy | N = 16 (BA: 6, 7, 8, 9, 10, 11, 18, 19, 20, 21, 37, 38, 39, 44, 45, 46) | 105 |
| P16 | Normal | 26 | 30 | L‐temporal and orbitofrontal topectomy | N = 16 (BA: 1, 2, 3, 4, 6, 7, 9, 10, 19, 35, 36, 37, 39, 40, 43, 46) | 101 |
| P17 | R occipito‐temporal encephalomalacia | 32 | 30 | R‐occipital topectomy and R‐AH | N = 5 (3, 4, 5, 6, 20) | 27 |
| P18 | Normal | 23 | 0.5 | L‐AHTL | N = 13 (BA: 3, 4, 6, 8, 9, 10, 22, 25, 32, 40, 44, 45, 46) | 95 |
| P19 | R occipito‐parieto‐temporal dysplasia | 17 | 4 | R‐temporo‐parietal topectomy | N = 15 (BA: 2, 4, 5, 6, 7, 10, 11, 21, 22, 39, 40, 41, 43, 46, 47) | 91 |
| P20 | Normal | 30 | 2 | None | N = 8 (BA: 2, 5, 6, 7, 8, 9, 10, 46) | 55 |
| P21 | L occipito‐temporal dysgenesis | 17 | 12 | L‐occipito‐polar topectomy | N = 6 (BA: 28, 29, 30, 31, 35, 42) | 38 |
| P22 | Normal | 40 | 14 | L‐AH | N = 21 (BA: 1, 2, 3, 4, 6, 7, 8, 9, 10, 18, 19, 21, 22, 28, 32, 37, 40, 42, 43, 44, 46) | 99 |
| P23 | L hippocampal sclerosis | 36 | 16 | L‐AH | N = 16 (BA: 2, 4, 6, 9, 10, 11, 25, 30, 37, 38, 40, 42, 44, 45, 46, 47) | 92 |
| P24 | L frontal opercular—insular dysgenesis | 29 | 90 | L frontal–opercular topectomy | N = 12 (BA: 8, 9, 20, 21, 22, 27, 38, 40, 41, 45, 46, 47) | 39 |
| P25 | R temporal CD | 37 | 4 | R temporal topectomy | N = 9 (BA: 1, 2, 3, 20, 36, 38, 42, 43, 44) | 38 |
Twenty‐five patients were enrolled at two different epilepsy surgical centers. MRI finding, age at implantation surgery, resection type, covered Brodmann's areas and nonictal electrode numbers in each patient are shown.
CD, cortical dysplasia; AH, amygdalo‐hyppocampectomy; AHTL, amygdalo‐hyppocampectomy with anterior temporal lobe resection; R, right side; L, left side.