Effects of music engagement on responses to painful stimulation
The Clinical Journal of Pain, 05/11/2012
Bradshaw DH et al. – Engaging activities may prevent pain by creating competing constructions of reality that draw on the same processing resources as pain. Better understanding of these processes will advance the development of more effective pain modulation through improved manipulation of engagement strategies.Methods
- 53 healthy volunteers having normal hearing participated in 4 music listening conditions consisting of passive listening (no task) or performing an error detection task varying in signal complexity and task difficulty.
- During all conditions, participants received normally painful fingertip shocks varying in intensity while stimulus–evoked potentials (SEP), pupil dilation responses (PDR), and retrospective pain reports were obtained.
- SEP and PDR increased with increasing stimulus intensity.
- Task performance decreased with increasing task difficulty.
- Mixed model analyses, adjusted for habituation/sensitization and repeated measures within person, revealed significant quadratic trends for SEP and pain report (Pchange<0.001) with large reductions from no task to easy task and smaller graded reductions corresponding to increasing task difficulty/complexity.
- PDR decreased linearly (Pchange<0.001) with graded task condition.
- Authors infer that these graded reductions in indicators of central and peripheral arousal and in reported pain correspond to graded increases in engagement in the music listening task.