The Clinical journal of pain
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Randomized Controlled Trial
Cathodal and Anodal Left Prefrontal tDCS and the Perception of Control Over Pain.
The prefrontal cortex may be a promising target for the use of transcranial direct current stimulation (tDCS) in the management of pain symptoms. The present study explored the effects of anodal and cathodal tDCS over the left dorsolateral prefrontal cortex on the effects of perceived pain controllability. ⋯ Left dorsolateral prefrontal cortex tDCS may play a role in modulating the neurocircuitry involved with the perception of control over pain.
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The aim of this study was to evaluate sensitization and habituation of median somatosensory-evoked potential (MSEP) and correlate with migraine characteristics and allodynia. ⋯ The migraineurs have impaired cortical inhibition to somatosensory stimuli, and sensitization may be a feature of chronicity.
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Current models of chronic pain recognize that psychosocial factors influence pain and the effects of pain on daily life. The role of such factors has been widely studied on English-speaking individuals with chronic pain. It is possible that the associations between such factors and adjustment may be influenced by culture. This study sought to evaluate the importance of coping responses, self-efficacy beliefs, and social support to adjust to chronic pain in a sample of Portuguese patients, and discuss the findings with respect to their similarities and differences from findings of studies on English-speaking individuals. ⋯ The findings provide support for the importance of the psychosocial factors studied in terms of adjustment to chronic pain in Portuguese patients, and also suggest the possibility of some differences in the role of these factors due to culture.
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Comparative Study
Self-regulation (Recovery) From Pain: Association Between Time-based Measures of Infant Pain Behavior and Prenatal Exposure to Maternal Depression and Anxiety.
Capacities for self-regulation that influence infant adaptation to noxious stimulation require investigation of changes in behavior over time. Prenatal exposure to maternal depression and anxiety (MDA) has been linked to altered infant pain reactivity; however, findings are inconclusive about MDA dynamic impacts on recovery. This study quantified the temporal profile of behavioral response and recovery to routine heel lance (HL) of infants with and without prenatal-MDA exposure. Aims were to examine whether MDA were associated with alterations in time-based measures of infant behavior and sequential patterning in pain expression. ⋯ Temporal measures can further help in understanding of infant complex behavioral responses to pain. Delayed recovery in MDA-exposed infants suggested diminished capacities for self-regulation of noxious distress.