Control over brain activation and pain learned by using real-time functional MRI.

Area of Science:

• Neuroscience
• Medical Imaging
• Pain Management

Background:

• Direct brain region activation control offers potential for treating neurological disorders.
• Targeting the endogenous pain modulatory system is crucial for clinical pain management.

Purpose of the Study:

• To investigate if individuals can learn to voluntarily control activation in the rostral anterior cingulate cortex (rACC).
• To determine if learned control over rACC activation impacts pain perception and chronic pain levels.

Main Methods:

• Utilized real-time functional MRI (rtfMRI) to guide subjects in training voluntary activation of the rACC.
• Assessed changes in pain perception following induced increases or decreases in rACC activation.
• Included control experiments with sham rtfMRI and training on different brain regions.
• Trained chronic pain patients to control rACC activation.

Main Results:

• Subjects successfully learned to control rACC activation with rtfMRI guidance.
• Voluntary modulation of rACC activation led to corresponding changes in pain perception.
• Chronic pain patients reported reduced pain after rACC training.
• Control conditions did not yield significant effects on pain perception.

Conclusions:

• Voluntary control over specific brain region activation (rACC) is achievable through targeted training.
• Learned control of rACC activation provides a mechanism for modulating pain perception.
• This neurofeedback approach shows promise for managing severe, chronic pain.