Experimental muscle pain and music, do they interact?

Background: Music is used to evoke audio analgesia during dental procedures, but it is unknown if experimental pain and music interact. This study aimed to explore the multisensory interaction between contrasting types of music and experimentally induced muscle pain. Methods: In 20 healthy women, 0.3 mL sterile hypertonic saline (5.8%) was injected into the masseter muscle during three sessions while contrasting music (classical and black metal) or no music was played in the background. Pain intensity was assessed every 15 seconds with a 0-100 mm visual analogue scale (VAS) until pain subsided. Pain spread (pain drawings), unpleasantness (VAS), anxiety (VAS), and pain quality (McGill Questionnaire) were assessed after the last pain assessment. Results: Pain of high intensity was evoked at all sessions with a median (interquartile range) peak pain intensity of 78 (30) in the black metal music, 86 (39) in the classical music, and 77 (30) in the control session. The pain duration was 142 (150) seconds in the black metal music, 135 (150) seconds in the classical music, and 135 (172) seconds in the control session. The corresponding pain-drawing areas were 42 (52), 37 (36), and 44 (34), arbitrary units respectively. There were no differences in any of these variables (Friedman's test; P's > .368), or in unpleasantness, anxiety, or pain quality between sessions (P's > .095). Conclusions: Experimentally induced muscle pain does not seem to be influenced by contrasting types of background music. Further studies exploring the multisensory integration between music and experimental muscle pain are needed.