Table 2.
Participant head motion during fMRI scans.
| cLBP patients in low pain |
cLBP patients in high pain |
Healthy controls |
||
|---|---|---|---|---|
| Motion parameters | Mean ± SE | Mean ± SE | Mean ± SE | P value |
| x | −0.0301 ± 0.0271 | −0.0396 ± 0.0436 | 0.0078 ± 0.0233 | .708 |
| y | 0.1145 ± 0.0625 | 0.0468 ± 0.0445 | 0.1046 ± 0.0272 | .297 |
| z | −0.0780 ± 0.0632 | −0.0882 ± 0.1398 | 0.0813 ± 0.0784 | .311 |
| Pitch | 0.0001 ± 0.0029 | 0.0002 ± 0.0010 | −0.0002 ± 0.0011 | .330 |
| Roll | −0.0016 ± 0.0009 | −0.0011 ± 0.0009 | 0.0007 ± 0.0007 | .176 |
| Yaw | 0.0003 ± 0.0018 | 0.0015 ± 0.0016 | 0.0002 ± 0.0005 | .913 |
Notes: SE = standard error; the six motion parameters (translation: x, y and z in mm and rotation: pitch, roll and yaw in degrees) were obtained from head movement correction for each participant. cLBP = chronic low back pain.