Table 2.
Pulse configuration used in Experiment 3
| State | CS100 | CCS40 | TS |
|---|---|---|---|
| 3A | – | – | 1 mV |
| 3B | 1 mV | – | 1 mV |
| 3C | – | + | 1 mV |
| 3D | – | – | TS1mVCS100 |
| 3E | 1 mV | – | TS1mVCS100 |
| 3F | – | + | TS1mVCS100 |
| 3G | 1 mV | + | TS1mVCS100 |
Experiment 3 studied the interactions between long interhemispheric inhibition (LIHI) and long interval intracortical inhibition (LICI). In conditions 3A to 3C, inhibitory effects of CS100 and CCS40 on 1 mV test motor evoked potential (MEP) were assessed. In conditions 3D to 3G, test stimulus intensity was increased in order to produce 1 mV test MEPs in the presence of CS100 (TS1mVCS100). CS100, conditioning stimulus given 100 ms prior to TS; CCS40, contralateral hemisphere stimulation given 40 ms prior to test TS; TS, test stimulus.