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Cognitive Symptoms Are Not Associated with Cognitive Performance in Post-Acute mTBI
Arielle M Levy1, Michael M Saling1, Jacqueline F I Anderson1,2
1Melbourne School of Psychological Sciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia.
Summary
Subjective cognitive symptoms after mild traumatic brain injury (mTBI) do not correlate with objective cognitive performance. This suggests post-injury symptoms may stem from factors other than cognitive deficits.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Trauma Research
Background:
- Subjective cognitive symptoms are frequently reported after mild traumatic brain injury (mTBI).
- Traditional cognitive performance measures may lack sensitivity to detect subtle cognitive changes post-mTBI.
- The relationship between subjective and objective cognition in mTBI remains unclear.
Purpose of the Study:
- To investigate the association between subjective cognitive symptoms and objective cognitive performance in individuals with mTBI.
- To utilize computer-based cognitive tasks with increasing cognitive load, hypothesized to be more sensitive to subtle cognitive variations.
Main Methods:
- Prospective recruitment of individuals with mTBI (n=68) and trauma controls (n=40).
- Assessment approximately 8 weeks post-injury, including subjective symptom reporting, objective cognitive performance (computer-based tasks), and psychological distress.
- Statistical analysis using bivariate correlations and controlling for psychological distress.
Main Results:
- No significant associations were found between subjective and objective cognition in the mTBI group.
- Correlations remained non-significant even after controlling for psychological distress.
- Similar non-significant patterns were observed in the trauma control group.
Conclusions:
- No significant relationships between objective and subjective cognition were observed in post-acute mTBI, even with sensitive cognitive tasks.
- Effect sizes for any observed relationships were small to negligible.
- At 8 weeks post-mTBI, subjective cognitive symptoms appear to be primarily influenced by factors other than objective cognitive performance at a group level.
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