Table 3.
Individual infant MEP responses to transcranial magnetic stimulation
| Infant | CA | MEP from MAH | MAH MSO | MEP from LAH | LAH MSO |
|---|---|---|---|---|---|
| 1 | 3 | Contralateral | 80% | Contralateral | 75% |
| 2 | 4 | Contralateral and ipsilateral | 80% | Ipsilateral | 70% |
| 3 | 4 | Contralateral and ipsilateral | 85% | Contralateral and ipsilateral | 80% |
| 4 | 5 | Absent | - | Contralateral and ipsilateral | 70% |
| 5 | 6 | Contralateral | 75% | Ipsilateral | 85% |
| 6 | 7 | Absent | - | Contralateral and ipsilateral | 70% |
| 7 | 9 | Absent | - | Absent | - |
| 8 | 10 | Absent | - | Absent | - |
| 9 | 12 | Absent | - | Contralateral | 80% |
| 10 | 12 | Absent | - | Contralateral | 85% |
Motor evoked potentials (MEPs) are reported as being present in either contralateral and/or ipsilateral wrist flexors or absent. Maximum stimulator output (MSO) is reported as the lowest intensity at which an MEP was elicited from the more or less-affected hemispheres (MAH; LAH). Infants are ordered by corrected age (CA) youngest to oldest. Dotted line demarcates younger (infants 1–5) from older (infants 6–10) infant groups.