Key result
TBI-associated depression is linked to decreased DAN-subgenual cingulate and increased DAN-DMN connectivity.
Why the study?
Does precision functional MRI mapping reveal distinct connectivity patterns for depression associated with traumatic brain injury?
Observational (n=180)
Does precision functional MRI mapping reveal distinct connectivity patterns for depression associated with traumatic brain injury?
Precision functional MRI mapping identifies a distinct brain connectivity profile for TBI-associated depression, suggesting a physiologically distinct syndrome that may benefit from targeted neuromodulation.
Answers are grounded in this paper and cite their sources.
TBI depression shows distinct DAN connectivity on precision fMRI; hypothesis-generating for targeted neuromodulation trials.
= 180). We identified a distinct brain connectivity profile in TBI-associated depression that was independent of TBI, MDD, posttraumatic stress disorder (PTSD), depression severity, and cohort. TBI-associated depression was independently associated with decreased DAN-subgenual cingulate connectivity, increased DAN-DMN connectivity, and the combined effect of both. This effect was stronger when using precision functional mapping relative to group-level network maps. Our results support the possibility of a physiologically distinct "TBI affective syndrome," which may benefit from individualized neuromodulation approaches to target its distinct neural circuitry.
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Siddiqi et al. (2023) conducted an observational in TBI-associated depression (n=180). Precision functional MRI mapping vs. Group-level network maps was evaluated on Brain connectivity profile. Precision functional MRI mapping revealed that TBI-associated depression is independently associated with decreased DAN-subgenual cingulate connectivity and increased DAN-DMN connectivity.
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