Wu et al. (2026)
- Authors: Kang Wu, Tian Zhou
- Institutes: Beijing Key Laboratory of Intelligent Drug Research and Development for Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
- Publisher: Brain and Behavior
- Link: DOI
Summary
This research provides a neuroimaging-based roadmap for personalizing brain stimulation treatments for ME/CFS. By identifying a specific region in the visual cortex connected to the thalamus, it offers a concrete target for future therapies aimed at reducing the debilitating fatigue characteristic of the condition.
What was researched?
The study aimed to identify potential cortical targets for non-invasive brain stimulation to treat fatigue in ME/CFS by analyzing thalamic functional connectivity.
Why was it researched?
While brain stimulation shows promise for ME/CFS, the lack of standardized and effective cortical targets has limited its clinical application and consistency across patients.
How was it researched?
Researchers analyzed brain scans from 100 CFS patients and 100 healthy controls using thalamic seeding, utilizing both normative analysis from a large public dataset and individual subject-specific mapping. The findings were further validated using a longitudinal dataset of 35 patients who participated in a one-month Tai Chi intervention.
What has been found?
A specific site in the left lateral occipital cortex, near the PO7 electrode, was identified where functional connectivity with the thalamus strongly correlated with fatigue severity. Furthermore, changes in connectivity at this location were significantly associated with improvements in fatigue following the exercise program.
Discussion
The study highlights that individual brain patterns in ME/CFS show significant spatial variability, suggesting that group-based normative frameworks may be more reliable for initial targeting than subject-specific maps. However, the exact physiological mechanism by which this occipital region influences the subjective experience of fatigue remains to be fully elucidated.
Conclusion & Future Work
The left lateral occipital cortex is a promising candidate target for future brain stimulation trials. These findings suggest a practical, connectivity-guided framework for refining neurostimulation therapies for fatigue symptoms in CFS.