Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case series

Objective: To investigate if eye tracking can support detection of covert voluntary eye movements and to compare these findings with a simultaneously performed clinical assessment according to the Coma Recovery Scale manual regarding visual stimuli. Design: Observational case series. Subjects: Twe...

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Main Authors: Jan Johansson, Marika Möller, Kristina Franzon, Jonas Stenberg, Alison K. Godbolt
Format: Article
Language:English
Published: Medical Journals Sweden 2025-01-01
Series:Journal of Rehabilitation Medicine
Subjects:
Online Access:https://medicaljournalssweden.se/jrm/article/view/41324
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author Jan Johansson
Marika Möller
Kristina Franzon
Jonas Stenberg
Alison K. Godbolt
author_facet Jan Johansson
Marika Möller
Kristina Franzon
Jonas Stenberg
Alison K. Godbolt
author_sort Jan Johansson
collection DOAJ
description Objective: To investigate if eye tracking can support detection of covert voluntary eye movements and to compare these findings with a simultaneously performed clinical assessment according to the Coma Recovery Scale manual regarding visual stimuli. Design: Observational case series. Subjects: Twelve outpatients with prolonged disorders of consciousness recruited from the rehabilitation clinic of a regional rehabilitation unit. Method: Eye movements were recorded with a wearable eye tracker while performing 4 test items from the Coma Recovery Scale Revised. The clinical assessment and recorded eye movement responses were analysed for agreement. Results: Response data was obtained from 238 out of 288 trials. Eye-tracking data were obtained in median 89.6% of the trials (37.5–100%). The eye tracking assessment judged a significantly higher percentage of trials as a response (46.2%) compared with the clinical assessment (18.1%), mainly in test items “visual pursuit” and “visual fixation”. Conclusion: Eye tracking showed potential to be more effective in the detection of putative voluntary eye movements compared with conventional examination. Based on the findings in this and previous studies, eye tracking may serve as a useful complementary tool when examining patients with prolonged disorders of consciousness.
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series Journal of Rehabilitation Medicine
spelling doaj-art-75da7ed5fc0249789e7d40a1d857bc752025-01-03T09:19:27ZengMedical Journals SwedenJournal of Rehabilitation Medicine1651-20812025-01-015710.2340/jrm.v57.41324Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case seriesJan Johansson0https://orcid.org/0000-0002-1093-4179Marika Möller1https://orcid.org/0000-0001-8700-5186Kristina Franzon2Jonas Stenberg3https://orcid.org/0000-0002-5769-7959Alison K. Godbolt4https://orcid.org/0000-0003-4511-6181Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, SwedenDepartment of Clinical Sciences, Division of Rehabilitation Medicine, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden; Department of Rehabilitation Medicine, Danderyd Hospital, Stockholm, SwedenDepartment of Clinical Sciences, Division of Rehabilitation Medicine, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden; Department of Rehabilitation Medicine, Danderyd Hospital, Stockholm, SwedenDepartment of Clinical Sciences, Division of Rehabilitation Medicine, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden; Department of Rehabilitation Medicine, Danderyd Hospital, Stockholm, Sweden; Norwegian University of Science and Technology, Department of Neuromedicine and Movement Science, Trondheim, NorwayDepartment of Clinical Sciences, Division of Rehabilitation Medicine, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden; Department of Rehabilitation Medicine, Danderyd Hospital, Stockholm, SwedenObjective: To investigate if eye tracking can support detection of covert voluntary eye movements and to compare these findings with a simultaneously performed clinical assessment according to the Coma Recovery Scale manual regarding visual stimuli. Design: Observational case series. Subjects: Twelve outpatients with prolonged disorders of consciousness recruited from the rehabilitation clinic of a regional rehabilitation unit. Method: Eye movements were recorded with a wearable eye tracker while performing 4 test items from the Coma Recovery Scale Revised. The clinical assessment and recorded eye movement responses were analysed for agreement. Results: Response data was obtained from 238 out of 288 trials. Eye-tracking data were obtained in median 89.6% of the trials (37.5–100%). The eye tracking assessment judged a significantly higher percentage of trials as a response (46.2%) compared with the clinical assessment (18.1%), mainly in test items “visual pursuit” and “visual fixation”. Conclusion: Eye tracking showed potential to be more effective in the detection of putative voluntary eye movements compared with conventional examination. Based on the findings in this and previous studies, eye tracking may serve as a useful complementary tool when examining patients with prolonged disorders of consciousness. https://medicaljournalssweden.se/jrm/article/view/41324acquired brain injuriesComa Recovery Scale Revisedeye trackingconsciousness disorders
spellingShingle Jan Johansson
Marika Möller
Kristina Franzon
Jonas Stenberg
Alison K. Godbolt
Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case series
Journal of Rehabilitation Medicine
acquired brain injuries
Coma Recovery Scale Revised
eye tracking
consciousness disorders
title Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case series
title_full Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case series
title_fullStr Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case series
title_full_unstemmed Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case series
title_short Eye tracking to support assessment of patients with prolonged disorder of consciousness – a case series
title_sort eye tracking to support assessment of patients with prolonged disorder of consciousness a case series
topic acquired brain injuries
Coma Recovery Scale Revised
eye tracking
consciousness disorders
url https://medicaljournalssweden.se/jrm/article/view/41324
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