Percentage of MS patients (n=50) with abnormal corticospinally mediated excitatory reponses (hand and leg muscles) and callosally mediated inhibition (hand muscles). Stimulation effects were defined as abnormal when at least one parameter of corticospinally mediated responses (central motor latency, amplitude) or of transcallosal inhibition (latency and/or duration) lay outside the normal range
| FDI | TA | |
| Contralateral excitatory response: | ||
| Unilateral | 22 | 162-150 |
| Bilateral | 18 | 32 |
| Unilateral or bilateral | 40 | 48 |
| Hand and/or leg muscle | 62 | |
| Transcallosal inhibition: | ||
| Unidirectional | 42 | — |
| Bidirectional | 38 | — |
| Unidirectional or bidirectional | 80 | — |
| At least one abnormality in hand muscles | 88 | |
| At least one abnormality in hand and/or leg muscles | 34 | |
↵2-150 No response in one patient. FDI=first dorsal interosseous; TA=tibialis anterior.