Brain Imaging and Behavior

, Volume 9, Issue 3, pp 564–573

Functional neuroimaging of acute oculomotor deficits in concussed athletes

  • Brian Johnson
  • Kai Zhang
  • Mark Hallett
  • Semyon Slobounov
Original Research

DOI: 10.1007/s11682-014-9316-x

Cite this article as:
Johnson, B., Zhang, K., Hallett, M. et al. Brain Imaging and Behavior (2015) 9: 564. doi:10.1007/s11682-014-9316-x

Abstract

In the pursuit to better understand the neural underpinnings of oculomotor deficits following concussion we performed a battery of oculomotor tests while performing simultaneous functional magnetic resonance imaging (fMRI). Based on the increasing evidence that concussion can disrupt multiple brain functional networks, including the oculomotor control networks, a series of classic saccadic and smooth pursuit tasks were implemented. Nine concussed athletes were tested within seven days of injury along with nine age and sex matched healthy normal volunteers. Both behavioral and fMRI data revealed differential results between the concussed and normal volunteer groups. Concussed subjects displayed longer latency time in the saccadic tasks, worse position errors, and fewer numbers of self-paced saccades compared to normal volunteer subjects. Furthermore, the concussed group showed recruitment of additional brain regions and larger activation sites as evidenced by fMRI. As a potential diagnostic and management tool for concussion, oculomotor testing shows promise, and here we try to understand the reasons for this disrupted performance with the aide of advanced neuroimaging tools.

Keywords

Concussion Oculomotor Mild traumatic brain injury Eye-Tracking 

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Brian Johnson
    • 1
  • Kai Zhang
    • 1
  • Mark Hallett
    • 3
  • Semyon Slobounov
    • 1
    • 2
    • 3
  1. 1.Department of KinesiologyThe Pennsylvania State UniversityPennsylvaniaUSA
  2. 2.Department of NeurosurgeryPenn State Milton S. Hershey Medical CenterHersheyUSA
  3. 3.National Institutes of Health, National Institute of Neurological Disorders and StrokeBethesdaUSA

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