Negative body image associated with changes in the visual body appearance increases pain perception

Area of Science:

• Neuroscience
• Psychology
• Pain Research

Background:

• Visual illusions altering body appearance show potential in pain rehabilitation.
• Interindividual variability exists in the analgesic effects of visual body image manipulation.
• The precise relationship between visual body appearance and pain modulation remains unclear.

Purpose of the Study:

• To investigate if a negative body image, evoked by altered visual body appearance, contributes to interindividual differences in pain perception.
• To determine if negative body image associated with visual appearance changes can exacerbate pain.

Main Methods:

• Twenty-five healthy participants underwent the rubber hand illusion paradigm.
• Negative body image was induced using "injured," "hairy," and "twisted" rubber hands, with a "normal" hand as control.
• Pain thresholds were measured using thermal stimuli while participants observed the manipulated rubber hands.

Main Results:

• Participants reported greater unpleasantness with "injured" and "hairy" rubber hands compared to "normal" and "twisted" hands.
• Pain thresholds were significantly lower when observing the "injured" rubber hand, indicating increased pain sensitivity.

Conclusions:

• A negative body appearance, especially when linked to pain, can heighten pain sensitivity.
• Findings suggest that negative body image plays a role in modulating pain perception and may explain differences in treatment outcomes.