Pain
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Pain ratings and pain-related cerebral potentials in response to noxious stimuli were investigated under hypnotic hypo- or hyperalgesia. Out of a sample of 50 subjects the 10 most highly hypnotizable were selected using the Stanford Hypnotic Susceptibility Scale. Phasic pain was induced by brief electrical stimuli intracutaneously applied to the subject's left middle finger. ⋯ In contrast, the amplitudes of the late somatosensory potentials evoked by the pain-inducing stimuli were not modified in either of the suggestive states. Furthermore, no effects of hypnosis were found on AEPs and on the power spectra of the spontaneous EEG. The results are discussed on the basis of a dissociation of sensory and affective components of pain under hypnosis.
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Randomized Controlled Trial Clinical Trial
The relationship between children's coping styles and psychological interventions for cold pressor pain.
This study examined the hypothesis that matching pain management interventions to children's preferred coping methods would increase pain tolerance and decrease self-reported pain during the cold pressor pain paradigm. Children aged 8-10 years were classified as 'attenders' (focusing on the stimulus) or 'distractors' (focusing away from the stimulus) based upon their spontaneous coping responses during a baseline exposure to the cold pressor. Children were then randomly assigned to 1 of 3 intervention conditions (sensory focusing, imagery, or no intervention) and completed the cold pressor procedure again 2 weeks later. ⋯ Although pain ratings tended to be lower for distractors using imagery, the significant interaction resulted from an increase in ratings for the distractors using sensory focusing (i.e., a 'mismatched' intervention). Results suggest that, for distractors, interventions that are consistent with natural coping methods are most effective in enhancing abilities to cope with pain, while a mismatched intervention reduces coping abilities. The findings also suggest further study regarding how to provide effective pain intervention with attenders, since neither intervention enhanced coping in this group.