Table 1.
Number of sleep spindles detected in the discovery and replication sets.
| Discovery set |
Replication set |
|||||
|---|---|---|---|---|---|---|
| PTSD [n = 18] Mean (SD) |
Non-PTSD [n = 29] Mean (SD) |
Group comparison p-value |
PTSD [n = 13] Mean (SD) |
Non-PTSD [n = 18] Mean (SD) |
Group comparison p-value |
|
| Number of slow spindles from channel Fz | ||||||
| Whole night | ||||||
| Night 1 | 1170 (410) | 1178 (355) | 0.793 | 1263 (360) | 1384 (441) | 0.238 |
| Night 2 | 1202 (342) | 1214 (321) | 0.991 | 1267 (319) | 1409 (333) | 0.105 |
| 1st sleep cycle | ||||||
| Night 1 | 412 (237) | 446 (272) | 0.784 | 363 (101) | 490 (197) | 0.057 |
| Night 2 | 362 (192) | 384 (259) | 0.654 | 417 (164) | 381 (175) | 0.660 |
| 2nd sleep cycle | ||||||
| Night 1 | 304 (93) | 282 (123) | 0.477 | 333 (108) | 362 (153) | 0.645 |
| Night 2 | 316 (133) | 330 (117) | 0.622 | 350 (125) | 406 (131) | 0.238 |
| 3rd sleep cycle | ||||||
| Night 1 | 236 (113) | 231 (124) | 0.818 | 279 (115) | 251 (99) | 0.873 |
| Night 2 | 234 (82) | 248 (91) | 0.678 | 239 (106) | 326 (119) | 0.032* |
| Number of fast spindles from channel Pz | ||||||
| Whole night | ||||||
| Night 1 | 948 (5 2 6) | 975 (4 0 5) | 0.491 | 1066 (2 6 8) | 1087 (4 0 0) | 0.764 |
| Night 2 | 990 (4 7 3) | 1061 (3 9 1) | 0.464 | 1126 (3 8 8) | 1216 (3 7 4) | 0.412 |
| 1st sleep cycle | ||||||
| Night 1 | 270 (190) | 294 (183) | 0.477 | 287 (125) | 269 (142) | 0.459 |
| Night 2 | 220 (148) | 244 (131) | 0.554 | 256 (109) | 241 (120) | 0.561 |
| 2nd sleep cycle | ||||||
| Night 1 | 212 (110) | 229 (119) | 0.592 | 225 (97) | 264 (149) | 0.674 |
| Night 2 | 244 (135) | 261 (135) | 0.793 | 297 (120) | 290 (141) | 0.826 |
| 3rd sleep cycle | ||||||
| Night 1 | 230 (149) | 211 (114) | 0.694 | 235 (72) | 233 (116) | 0.734 |
| Night 2 | 208 (102) | 252 (116) | 0.225 | 248 (121) | 303 (143) | 0.307 |
*p < 0.05, Wilcoxon rank-sum test.