Detecting eye movement abnormalities from concussion

Jun Maruta, Jamshid Ghajar

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

3 Scopus citations

Abstract

An attention-based biomarker may be useful for concussion screening. A key role of attention is to generate time-based expectancies of specific sensory information, and it is postulated that postcon- cussion cognitive impairments and symptoms may stem from a primary deficit in this predictive tim- ing mechanism. There is a close relationship between gaze and attention, but in addressing predic- tive timing, there is a need for an appropriate testing paradigm and methods to quantify oculomotor anomalies. We have utilized a continuous predictive visual tracking paradigm because human vi- sual tracking requires predicting the temporal course of a stimulus and dynamically synchronizing the required action with the stimulus. We have shown that concussion patients often show disrupt- ed gaze-target synchronization characterized by large gaze position error variability and overall phase advancement. Various attention components interact with visual tracking, and thus there is a possibility that different neurological and physiological conditions produce identifiable visual track- ing characteristics. Analyzing neuromotor functions, specifically oculomotor synchronization, can provide a fast, accurate, and reliable assessment of cognitive functions.

Original languageEnglish
Title of host publicationConcussion
PublisherS. Karger AG
Pages226-233
Number of pages8
ISBN (Electronic)9783318026498
ISBN (Print)9783318026481
DOIs
StatePublished - 22 Jun 2012
Externally publishedYes

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