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Altered grey matter structural covariance in chronic moderate-severe traumatic brain injury. |
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#PLACEHOLDER_PARENT_METADATA_VALUE# |
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#PLACEHOLDER_PARENT_METADATA_VALUE# |
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#PLACEHOLDER_PARENT_METADATA_VALUE# |
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#PLACEHOLDER_PARENT_METADATA_VALUE# |
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#PLACEHOLDER_PARENT_METADATA_VALUE# |
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#PLACEHOLDER_PARENT_METADATA_VALUE# |
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#PLACEHOLDER_PARENT_METADATA_VALUE# |
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| DOI |
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10.1038/s41598-023-50396-7 |
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| Abstract |
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Traumatic brain injury (TBI) alters brain network connectivity. Structural covariance networks (SCNs) reflect morphological covariation between brain regions. SCNs may elucidate how altered brain network topology in TBI influences long-term outcomes. Here, we assessed whether SCN organisation is altered in individuals with chronic moderate-severe TBI (≥ 10 years post-injury) and associations with cognitive performance. This case-control study included fifty individuals with chronic moderate-severe TBI compared to 75 healthy controls recruited from an ongoing longitudinal head injury outcome study. SCNs were constructed using grey matter volume measurements from T1-weighted MRI images. Global and regional SCN organisation in relation to group membership and cognitive ability was examined using regression analyses. Globally, TBI participants had reduced small-worldness, longer characteristic path length, higher clustering, and higher modularity globally (p < 0.05). Regionally, TBI participants had greater betweenness centrality (p < 0.05) in frontal and central areas of the cortex. No significant associations were observed between global network measures and cognitive ability in participants with TBI (p > 0.05). Chronic moderate-severe TBI was associated with a shift towards a more segregated global network topology and altered organisation in frontal and central brain regions. There was no evidence that SCNs are associated with cognition. |
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| Citation |
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Scientific Reports 2024-01-19; 14(1) |
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