Table 4.
Time lag and duration of significant β band (13–30Hz) power spectral density modulation based on permutation (boot-strap) analysis for subjects undergoing silent speech trials. Analysis is performed with the subject cue at time 0 (columns 2–4), and with the subject response at time 0 (columns 5–7). nSR/tN: number of significant responses/total N.
| CONDITION (Sync Response) |
AUDIO CUE SYNCHRONIZED ANALYSIS | SUBJECT RESPONSE SYNCHRONIZED ANALYSIS | ||||
|---|---|---|---|---|---|---|
| L & R: nSR/tN |
Lag (ms) Mean (SE) |
Duration (ms) Mean (SE) |
L & R: nSR/tN |
Lag (ms) Mean (SE) |
Duration (ms) Mean (SE) |
|
| All Speech (S) | 4/4 | 280 (76) | 1195 (488) | 4/4 | −584 (11) | 1779 (731) |
| Ipsi Button (B) | 4/4 | 159 (16) | 693 (127) | 4/4 | −190 (56) | 730 (208) |
| Contra Button (B) | 3/4 | 164 (19) | 891 (245) | 3/4 | −171 (67) | 873 (269) |
| Speech + B (S) | 4/4 | 214 (19) | 1302 (442) | 4/4 | −721 (48) | 1789 (743) |
| Speech Alone (S) | 3/4 | 484 (167) | 573 (111) | 4/4 | 330 (595) | 491 (262) |
| Speech + B (B) | 4/4 | 213 (19) | 1286 (436) | 4/4 | −177 (73) | 1516 (574) |
| Silent Speech (−) | 1/4 | 2992 (−) | 9 (−) | NO MEASUREABLE RESPONSE | ||
| Silent Speech + B (B) | 3/4 | 187 (26) | 589 (172) | 3/4 | −181 (63) | 544 (157) |