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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.

Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists
|August 7, 2024
PubMed
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.

Keywords:
AssessmentAttentionExecutive functionsHead injuryLearning and memoryRehabilitationTraumatic brain injury

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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.