Cardiac cycle modulates social pain

Area of Science:

• Psychology
• Neuroscience
• Physiology

Background:

• Social pain, triggered by rejection or exclusion, shares similarities with physical pain.
• Baroreceptors, which monitor blood pressure, send signals that can attenuate physical pain.
• Baroafferent signals fluctuate with the cardiac cycle, increasing during systole and decreasing during diastole.

Purpose of the Study:

• To investigate if baroafferent signals, known to affect physical pain, also reduce social pain.
• To test the hypothesis that social rejection experiences are less painful during cardiac systole compared to diastole.

Main Methods:

• Participants engaged in the cyberball task, a social exclusion simulation.
• Exclusion events were synchronized with either cardiac systole or diastole.
• Social pain levels were measured during these cardiac cycle phases.

Main Results:

• Social pain evoked by exclusion was significantly lower during cardiac systole than during diastole.
• The influence of the cardiac cycle on social pain was more pronounced in individuals with higher heart rate variability.

Conclusions:

• Cardiac afferent signals appear to modulate social pain, similar to their role in physical pain.
• Heart rate variability may influence the impact of baroafferent signals on social pain perception.