Visual tracking synchronization as a metric for concussion screening.

TitleVisual tracking synchronization as a metric for concussion screening.
Publication TypeJournal Article
Year of Publication2010
AuthorsMaruta J, Suh M, Niogi SN, Mukherjee P, Ghajar J
JournalJ Head Trauma Rehabil
Volume25
Issue4
Pagination293-305
Date Published2010 Jul-Aug
ISSN1550-509X
KeywordsAdult, Female, Humans, Male, Memory Disorders, Memory, Short-Term, Middle Aged, Neuropsychological Tests, Ocular Motility Disorders, Post-Concussion Syndrome, Predictive Value of Tests, Psychomotor Performance, Young Adult
Abstract

Our goal was to determine whether performance variability during predictive visual tracking can provide a screening measure for mild traumatic brain injury (mTBI). Seventeen subjects with chronic postconcussive syndrome and 9 healthy control subjects were included in this study. Eye movements were recorded with video-oculography as the subject visually tracked a target that moved through a circular trajectory. We compared the variability of gaze positional errors relative to the target with the microstructural integrity of white matter tracts as measured by the fractional anisotropy (FA) parameter of diffusion tensor imaging. Gaze error variability was significantly correlated with the mean FA values of the right anterior corona radiata (ACR) and the left superior cerebellar peduncle, tracts that support spatial processing and sustenance of attention, and the genu of the corpus callosum. Because the ACR and the genu are among the most frequently damaged white matter tracts in mTBI, the correlations imply that gaze error variability during visual tracking may provide a useful screening tool for mTBI. Gaze error variability was also significantly correlated with attention and working memory measures in neurocognitive testing; thus, measurement of visual tracking performance is promising as a fast and practical screening tool for mTBI.

DOI10.1097/HTR.0b013e3181e67936
Alternate JournalJ Head Trauma Rehabil
PubMed ID20611047
Related Institute: 
Brain Health Imaging Institute (BHII)

Weill Cornell Medicine
Department of Radiology
525 East 68th Street New York, NY 10065