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Rubber Hand Illusion Increases Pain Caused by Electric Stimuli
Marta Siedlecka1, Nadine Spychała2, Marta Łukowska1
1Institute of Psychology, Jagiellonian University, Kraków, Poland.
The Journal of Pain
|September 3, 2017
Summary
The rubber hand illusion (RHI) increases pain intensity and alters pain location perception. This suggests that uncertainty in body ownership and pain location influences the relationship between illusions and pain sensitivity.
Area of Science:
- Neuroscience
- Psychology
- Pain Research
Background:
- The rubber hand illusion (RHI) is a phenomenon where individuals perceive a rubber hand as their own.
- Previous studies on RHI's effect on pain perception have shown inconsistent results.
Purpose of the Study:
- To investigate the influence of the RHI on the intensity of pain induced by electric stimuli.
- To examine how the RHI affects the perceived location of pain.
Main Methods:
- Participants received electric stimuli to their hands before and after RHI induction.
- A double-blind procedure was used to control for stimulation location and intensity.
- Perceived hand and pain location were measured to assess the illusion's impact.
Main Results:
- Noxious stimuli were perceived as more painful when experienced on the rubber hand during the illusion.
- The perceived location of stimulation on the experimental hand shifted towards the rubber hand.
- The RHI altered both pain intensity and the perceived location of pain.
Conclusions:
- Bodily illusions, like the RHI, can modulate pain perception.
- Uncertainty regarding the location of pain and the affected body part may influence the link between illusions and pain.
- Further research is needed to identify specific aspects of altered body awareness that contribute to pain sensitization.
