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Assessing for Unilateral Spatial Neglect Using Eye-Tracking Glasses: A Feasibility Study.

Brenton Kortman1, Kate Nicholls1

  • 1Department of Occupational Therapy, Flinders University, Adelaide, South Australia, Australia.

Occupational Therapy in Health Care
|August 6, 2016
PubMed
Summary

Eye-tracking glasses effectively identified unilateral spatial neglect (USN) in stroke patients during a coffee-making task. This feasibility study suggests eye-tracking is a viable tool for detecting USN in real-life scenarios.

Keywords:
Unilateral spatial neglectevaluationeye movement measurementstroke

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Area of Science:

  • Neuroscience
  • Rehabilitation Medicine
  • Human-Computer Interaction

Background:

  • Unilateral spatial neglect (USN) is a common post-stroke deficit.
  • Accurate detection of USN is crucial for effective rehabilitation.
  • Current diagnostic methods may have limitations in real-world settings.

Purpose of the Study:

  • To assess the feasibility of using eye-tracking glasses to detect USN in stroke survivors.
  • To determine if eye-tracking can differentiate between participants with and without USN.
  • To evaluate the viability of a larger-scale study.

Main Methods:

  • A feasibility study involving 13 inpatient stroke participants (7 with USN, 6 without).
  • Participants performed a standardized coffee-making task in a kitchen environment while wearing Tobii eye-tracking glasses.
  • Eye-tracking data was compared against established USN assessments (Bells Test, Line Crossing Test).

Main Results:

  • Participants with USN exhibited significantly longer search times on the right side (p = .006).
  • A moderate correlation (r = .622, p = .04) was found between eye-tracking data and the Bells Test.
  • Eye-tracking demonstrated sensitivity in differentiating USN during a functional task.

Conclusions:

  • Eye-tracking glasses show promise as a sensitive tool for detecting unilateral spatial neglect in stroke patients.
  • Utilizing real-life tasks with eye-tracking is a feasible approach for USN assessment.
  • The findings support the potential for larger studies investigating eye-tracking in stroke rehabilitation.