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Covert Tracking to Visual Stimuli in Comatose Patients With Traumatic Brain Injury.
Ayham Alkhachroum1, Gabriela Aklepi2, Amin Sarafraz2
1From the Department of Neurology (A.A., G.A., B.M.M., E.S., D.H.B., P.G., D.S., N.M., M.K., A.M., S.D., T.R., K.O.P.), University of Miami; Jackson Memorial Hospital (A.A., G.A., C.F.B., E.S., D.H.B., P.G., D.S., N.M., M.K., A.M., S.D., T.R., K.O.P.); University of Miami Center for Computational Science (A.S.); Neuroscience Graduate Program (L.E.R.), The Miami Project to Cure Paralysis (L.E.R., W.D.D.), Department of Kinesiology and Sport Sciences (B.A.), and Department of Neurosurgery (J.R.J., W.D.D.), University of Miami, FL; Department of Neurology (J.C.), Columbia University, New York, NY; and Department of Neurology (M.F.W.), Case Western Reserve University, Louis Stokes Cleveland VA Medical Center, OH. axa2610@med.miami.edu.
Video eye tracking (VET) is feasible for detecting covert visual tracking in comatose traumatic brain injury (TBI) patients. This method may help predict consciousness recovery, offering a promising tool for TBI assessment.
Area of Science:
- Neuroscience
- Medical Technology
Background:
- Comatose patients with traumatic brain injury (TBI) present diagnostic challenges.
- Assessing residual neurological function, particularly visual tracking, is crucial for prognosis.
Purpose of the Study:
- To investigate the feasibility and utility of video eye tracking (VET) in detecting covert visual tracking in TBI patients.
- To explore the potential of VET findings as a prognostic indicator for consciousness recovery.
Main Methods:
- Recruited healthy participants and unresponsive TBI patients.
- Utilized VET glasses to record eye movements in response to visual stimuli.
- Classified patients based on VET findings (covert/overt tracking) and clinical assessments (CRS-R).
Main Results:
- VET was feasible in all TBI patients.
- Covert tracking was identified in 2 patients via VET alone.
- Patients demonstrating any form of tracking showed a higher rate of consciousness recovery at 6 months.
Conclusions:
- Video eye tracking is a feasible method for assessing covert visual tracking in comatose TBI patients.
- Further research is warranted to validate the prognostic significance of covert tracking detected by VET.
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