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Related Experiment Video

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A Neuroscientific Approach to the Examination of Concussions in Student-Athletes
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Chronic Post-Concussion Neurocognitive Deficits. I. Relationship with White Matter Integrity.

Jun Maruta1, Eva M Palacios2, Robert D Zimmerman3

  • 1Brain Trauma Foundation New York, NY USA.

Frontiers in Human Neuroscience
|February 24, 2016
PubMed
Summary

This study found that recent concussion patients with persistent symptoms did not show the visual tracking or white matter integrity deficits previously identified. This suggests a milder injury profile in the current patient group.

Keywords:
diffusion tensor imagingeye movementmild traumatic brain injuryneuroimagingneuropsychologypost-concussion syndrome

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Area of Science:

  • Neuroscience
  • Radiology
  • Neurology

Background:

  • Previous research linked concussion to visual tracking deficits and white matter tract integrity loss.
  • Persistent post-concussive symptoms warrant further investigation into their underlying neurological characteristics.

Purpose of the Study:

  • To re-evaluate visual tracking deficits and white matter tract integrity in adult patients with persistent post-concussive symptoms.
  • To compare findings with previously identified concussion characteristics using new data.

Main Methods:

  • Utilized cognitive assessments and Magnetic Resonance Diffusion Tensor Imaging (MR-DTI) on 32 patients and 126 controls.
  • Employed pairwise matching of control subjects to patients based on age and gender.
  • Analyzed white matter tracts for integrity correlated with cognitive performance metrics.

Main Results:

  • Most patients exhibited normal MR images; visual tracking was generally normal.
  • Patients displayed slowed response times in attention tasks, not explained by white matter integrity.
  • The current cohort did not replicate previously identified behavioral or anatomical concussion deficits.

Conclusions:

  • The current cohort of patients with persistent post-concussive symptoms did not present with the previously identified visual tracking or white matter integrity deficits.
  • Findings suggest the recent patient cohort may have sustained milder injuries compared to earlier cohorts.
  • Changes in patient recruitment or increased public awareness of concussion may explain the observed discrepancies.