Expectancy and treatment interactions: A dissociation between acupuncture analgesia and expectancy evoked placebo analgesia

Expectancy and treatment interactions: A dissociation between acupuncture analgesia and expectancy evoked placebo analgesia

Recent advances in placebo research have demonstrated the mind's power to alter physiology. In this study, we combined an expectancy manipulation model with both verum and sham acupuncture treatments to address: 1) how and to what extent treatment and expectancy effects - including both subjective pain intensity levels (pain sensory ratings) and objective physiological activations (fMRI) - inte...

Placebo Analgesia, Acupuncture and Sham Surgery

Invasive procedures, such as surgery and acupuncture, are likely better than the others in terms of eliciting placebo analgesia. Understanding how invasive procedures can elicit enhanced placebo responses may provide new insights into mechanisms underlying placebo analgesia. In this essay, it is argued that sensory, cognitive and emotional factors are major determinants of the magnitude of plac...

Manipulation of expectancy and anxiety in placebo research and their effects on opioid-induced analgesia.

PLACEBO ANALGESIA 1 Placebo Analgesia

SUMMARY The expectation of pain relief can exert a powerful analgesic effect, even when pain is severe. Depending on the nature of experiences and instructions provided, a placebo analgesic effect can be elicited acutely in a very large percentage of individuals, in both experimental and clinical contexts. Placebo analgesia has been linked with activity in the prefrontal cortex, endogenous opio...

Expectancy-induced placebo analgesia in children and the role of magical thinking.

UNLABELLED Expectations and beliefs shape the experience of pain. This is most evident in context-induced, placebo analgesia, which has recently been shown to interact with the trait of magical thinking (MT) in adults. In children, placebo analgesia and the possible roles that MT and gender might play as modulators of placebo analgesia have remained unexplored. Using a paradigm in which heat pa...