Table 2.
Peak latencies and source strengths for electric, mechanical, and laser stimulation conditionsa
| Peak latency (ms) |
Source strength (nAm) |
|||||||
| SIc (1) | SIc (2) | SIIc | SIIi | SIc (1) | SIc (2) | SIIc | SIIi | |
| RADIAL | 115 | 154 | 120 | — | 9.3 | 13.9 | 5.5 | — |
| MEDIAN | 130 | — | 173 | — | 8.6 | — | 23.4 | — |
| FOREARM | 110 | 148 | 132 | — | 22.2 | 19.9 | 7.3 | — |
| TIBIAL | 135 | — | 160 | — | 8.5 | — | 7.7 | — |
| LASER HAND | — | — | 216 | — | — | — | 23.8 | — |
| LIP | 64 | 87 | 218 | 212 | 13.1 | 17.4 | 26.4 | 17.7 |
Note: (1), first SIc source; (2), second SIc source
a
SIc, contralateral (left) primary somatosensory cortex; SIIc, contralateral secondary somatosensory cortex; SIIi, ipsilateral secondary somatosensory cortex; RADIAL, radial nerve; MEDIAN, median nerve; FOREARM, forearm dorsal skin; TIBIAL, tibial nerve; LASER HAND, laser stimulation of the right hand; LIP, mechanical stimulation of right lower lip (intact innervation). All stimulations were made on the right body-half.