Timing and gender determine if acute pain impairs working memory performance

Area of Science:

• Cognitive Neuroscience
• Pain Research
• Psychology

Background:

• The impact of pain on cognitive functions, especially working memory (WM), is not fully understood.
• Limited research exists on how concurrent pain affects WM test performance.

Purpose of the Study:

• To investigate the effects of acute pain on working memory performance.
• To examine the influence of pain timing and gender on WM.
• To determine if pain differentially affects WM during and after the pain experience.

Main Methods:

• 78 healthy participants underwent a working memory test under either acute pain (cold pressor task) or a control condition.
• Working memory was assessed during and 20 minutes after the pain/control condition.
• Objective and subjective pain measures were collected.

Main Results:

• Pain significantly impaired working memory performance during the cold pressor task.
• An interaction between gender and condition was observed, with women showing impairments during pain but not after.
• No significant impairment was found in men or in women after the pain stimulus.

Conclusions:

• The timing of pain and gender are critical factors influencing the detrimental effects of acute pain on working memory.
• Concurrent cold pressor pain impairs working memory in regularly menstruating women and those on contraceptives.
• Findings have implications for interpreting WM tests in clinical, professional, and educational settings.