Hybrid Evidence-Informed Synthesis of Resting-State Functional Connectivity Alterations in Mild Traumatic Brain...

Area of Science:

• Neuroscience
• Radiology
• Neurology

Background:

• Mild traumatic brain injury (mTBI) often results in persistent cognitive, affective, and sensory issues.
• Conventional imaging may not detect these subtle post-injury changes.
• Resting-state functional MRI (rs-fMRI) is used to identify alterations in brain networks.

Purpose of the Study:

• To synthesize recent high-quality rs-fMRI studies on mTBI using umbrella review principles.
• To identify consistent patterns of brain network dysfunction after mTBI.
• To critically evaluate methodological limitations in rs-fMRI research for mTBI.

Main Methods:

• Focused narrative analysis of recent rs-fMRI studies in mTBI.
• Integration of umbrella review principles.
• Examination of neurovascular confounds and analytical variability.

Main Results:

• Evidence supports a network-level model of mTBI with distributed connectivity disturbances.
• Findings indicate qualitative convergence of network dysfunction patterns.
• Limited eligible studies and methodological heterogeneity necessitate cautious interpretation.

Conclusions:

• mTBI is associated with widespread brain network connectivity alterations.
• Current rs-fMRI findings provide preliminary evidence for a network-level model of mTBI.
• Future research requires standardized, longitudinal, and multimodal imaging for robust conclusions.