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Updated: May 5, 2026
Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury
Published on: November 19, 2012
Longitudinal neurocognitive outcomes in children with mild traumatic brain injury: An ABCD cohort analysis
Nicola L de Souza1, Wenjing Meng2, Florin Vaida2
1Traumatic Brain Injury and Concussion Center, Department of Neurology, University of Utah School of Medicinehttps://ror.org/03r0ha626, Salt Lake City, UT, USA.
Insights
Mild traumatic brain injury (mTBI) in children may not cause lasting neurocognitive deficits when pre-existing differences are considered. Post-injury assessments revealed no significant differences between mTBI, orthopedic injury, and non-injured groups.
Area of Science:
- Pediatric neurology
- Neuroscience
- Cognitive psychology
Background:
- Mild traumatic brain injury (mTBI) can lead to persistent neurocognitive effects in some children, but understanding is limited by methodological variations and lack of pre-injury data.
- Prospective, longitudinal studies are crucial for accurately assessing the impact of mTBI on child development.
- Pre-injury neurocognitive functioning is a critical factor that may confound post-injury assessments.
Purpose of the Study:
- To evaluate neurocognitive outcome changes in children following mild traumatic brain injury (mTBI).
- To compare neurocognitive outcomes between children with mTBI, orthopedic injury (OI), and non-injured (NI) controls.
- To account for pre-injury functioning when assessing post-injury neurocognitive outcomes in pediatric mTBI.
Main Methods:
- Utilized data from the prospective longitudinal Adolescent Brain and Cognitive Development (ABCD) study.
- Compared children with mTBI (n=83) to orthopedic injury (OI, n=231) and non-injured (NI, n=218) control groups.
- Employed linear mixed-effects models to estimate changes in neurocognitive outcomes from baseline to 2-year follow-up, controlling for covariates.
Main Results:
- At baseline, the mTBI group showed superior performance in picture vocabulary and crystallized composite scores compared to the OI group.
- After adjusting for pre-injury baseline differences, no significant differences in neurocognitive outcomes were observed between the mTBI group and either the OI or NI control groups.
- This suggests that pre-existing individual factors may explain observed neurocognitive variations rather than the injury itself.
Conclusions:
- Accounting for pre-injury neurocognitive differences is essential when evaluating outcomes after pediatric mTBI.
- Observed neurocognitive differences post-injury may reflect pre-existing individual characteristics rather than the injury's direct impact.
- A comprehensive approach, considering baseline functioning, is necessary for accurate research on pediatric mTBI.
Objectives:
Most children recover from mild traumatic brain injury (mTBI), but some experience persistent neurocognitive effects. Understanding is limited due to methodological differences and a lack of pre-injury data. The study aimed to assess changes in neurocognitive outcomes in children following mTBI compared to orthopedic injury (OI) and non-injured (NI) controls, while accounting for pre-injury functioning.
Method:
Data were drawn from the Adolescent Brain and Cognitive Development (ABCD) study, a prospective longitudinal cohort. The sample included children with mTBI between the 1-year and 2-year follow-ups (n = 83), identified by parent report of head injury with memory loss or loss of consciousness, compared to children who experienced OI within the same period (n = 231) and an NI control group (n = 218). Changes in neurocognitive outcomes from baseline to the 2-year follow-up between groups (mTBI vs. OI; mTBI vs. NI) were estimated using linear mixed-effects models, accounting for demographic, behavioral, genetic, and white matter microstructural covariates.
Results:
At baseline prior to injury, the mTBI group demonstrated better performance on picture vocabulary and crystallized composite scores than the OI group. At post-injury, after adjusting for pre-injury baseline differences, children who sustained an mTBI were no different in any measure of neurocognitive outcomes compared to OI and NI controls.
Conclusions:
The findings highlight the importance of accounting for pre-injury differences when evaluating neurocognitive outcomes following pediatric mTBI. Neurocognitive differences within a year post-injury may be more related to pre-existing individual factors rather than the injury itself, underscoring the need for a comprehensive approach in studying pediatric mTBI.
