Table 4.
Maximum safe duration (expressed in seconds) of single trains of rTMS. Safety defined as absence of seizure, spread of excitation or afterdischarge of EMG activity. Numbers preceded by > are longest duration tested. Consensus has been reached for this table.
| Frequency (Hz) | Intensity (% of MT) |
||||
|---|---|---|---|---|---|
| 90% | 100% | 110% | 120% | 130% | |
| 1 | >1800a | >1800 | >1800 | >360 | >50 |
| 5 | >10 | >10 | >10 | >10 | >10 |
| 10 | >5 | >5 | >5 | 4.2 | 2.9 |
| 20 | 2.05 | 2.05 | 1.6 | 1.0 | 0.55 |
| 25 | 1.28 | 1.28 | 0.84 | 0.4 | 0.24 |
a
In Japan, up to 5000 pulses have been applied without safety problems (communication of Y. Ugawa).