Concussion history is negatively associated with visual-motor force complexity: evidence for persistent effects on visual-motor integration

Adam C. Raikes, Sydney Schaefer, Breanna E. Studenka

Research output: Contribution to journalArticle

Abstract

Objectives: Long-term monitoring of concussion recovery requires time- and cost-effective methods. Physiologic complexity may be useful in evaluating visual-motor integration following concussion. The purpose of this study was to quantify the extent to which prior number of concussions influenced visual-motor tracking force complexity. Methods: Thirty-five individuals with a self-reported concussion history (age: 20.92 ± 1.98) and 15 without (age: 20.92 ± 2.21) performed an isometric visual-motor tracking task, using index finger force to trace a straight line across a computer screen. Finger force root mean square error (RMSE), multi-scale complexity, and average power from 0 to 12 Hertz (Hz) were calculated. Individual multiple regressions were fit to these outcomes. Results: Force complexity decreased linearly with an increasing number of concussions (R2 = 0.101). Males had more complex force overall (R2 = 0.219) and greater 4–8 Hz average power (R2 = 0.193). The 8–12 Hz average power decreased significantly for individuals with prior loss of consciousness (LOC) and increasing numbers of concussions (R2 = 0.143). Conclusion: Individuals exhibited linear decreases in visual-motor tracking force complexity with increasing numbers of concussions, influenced by both gender and a history of LOC. These findings indicate cumulative changes in the ways in which previously concussed individuals process and integrate visual information to guide behaviour.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalBrain Injury
DOIs
StateAccepted/In press - Mar 1 2018

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Keywords

  • Concussion
  • mild traumatic brain injury
  • multi-scale complexity
  • visual-motor tracking

ASJC Scopus subject areas

  • Neuroscience (miscellaneous)
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Clinical Neurology

Cite this

Concussion history is negatively associated with visual-motor force complexity : evidence for persistent effects on visual-motor integration. / Raikes, Adam C.; Schaefer, Sydney; Studenka, Breanna E.

In: Brain Injury, 01.03.2018, p. 1-8.

Research output: Contribution to journalArticle

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