Table 7.
Relative peak pupil dilation (PPD) across a 25-minute protocol among participants with posttraumatic stress disorder (PTSD) and participants without PTSDa.
| PPD 25-minute protocol phases | Participants with PTSD, mean (SD) | Participants without PTSD, mean (SD) | |
|
|
T1b (n=18) | T2c (n=17) | T1 (n=18) |
| Baseline (rest phase) | 0.05 (0.05) | 0.02 (0.07) | 0.00 (0.06)d |
| ESTe 1 (0-5 minutes) | 0.21 (0.09) | 0.10 (0.09) | 0.15 (0.10) |
| EST 2 (5-10 minutes) | 0.16 (0.10) | 0.07 (0.10) | 0.09 (0.13) |
| GMf 1 (0-5 minutes) | 0.03 (0.07) | −0.02 (0.08) | −0.04 (0.09)d |
| GM 2 (5-10 minutes) | –0.04 (0.10) | −0.09 (0.08) | −0.10 (0.10) |
aPeak pupil dilation values are presented as relative change from 0; a 0.10 change reflects a 10% increase in peak pupil dilation.
bT1: time point 1.
cT2: time point 2.
dItalicized values indicate significant difference (P<.05) between participants with and without posttraumatic stress disorder at time point 1.
eEST: emotional image stress task phase.
fGM: guided meditation phase.