Table 2.
Slow pleasantness | Fast pleasantness | Slow intensity | Fast intensity | ||
---|---|---|---|---|---|
Healthy volunteers | |||||
Naloxone Saline |
4.63 ± 3.73 4.05 ± 3.42 t(26) = 0.43, p = 0.67 |
3.31 ± 3.70 1.42 ± 3.21 t(26) = 1.45, p = 0.16 |
1.34 ± 0.62 1.53 ± 0.79 t(26) = 0.72, p = 0.48 |
2.13 ± 0.89 2.42 ± 0.75 t(26) = 0.93, p = 0.36 |
|
Chronic pain (FM) patients | |||||
Naloxone Saline |
2.30 ± 3.11 3.19 ± 5.00 t(22) = 0.51, p = 0.62 |
1.80 ± 3.85 3.54 ± 2.85 t(22) = 1.27, p = 0.22 |
1.50 ± 0.75 2.05 ± 0.97 t(22) = 1.50, p = 0.15 |
2.21 ± 0.60 2.08 ± 0.80 t(22) = 0.46, p = 0.65 |
Healthy participants and FM patients rated the pleasantness and intensity of slow (CT-optimal) and fast brushing of the left forearm on the corresponding VAS scales. Mean ratings ± SD at baseline (before any drug administration) are displayed for slow and fast brushing for the naloxone and saline groups for healthy participants and FM patients. The t tests show that before drug infusion, there were no significant differences in ratings between individuals who subsequently received naloxone versus saline.