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Recording eye movement during stepping in place with a CCD (charge-coupled device) imagesensor
J Matsushima1, C Harada, M Kumagai
1Department of Otolaryngology, Hokkaido University, Sapporo, Japan.
Auris, Nasus, Larynx
|January 1, 1992
Summary
A novel charge-coupled device (CCD) imaging system precisely records eye movements during walking. This technology aids in understanding gaze fixation mechanisms, particularly in individuals with oscillopsia or gait abnormalities.
Area of Science:
- Ophthalmology
- Neuroscience
- Biomedical Engineering
Background:
- Gaze stabilization during locomotion is crucial for visual perception.
- Understanding the impact of gait abnormalities on eye movements is clinically relevant.
Purpose of the Study:
- To introduce a new system for recording eye movements during walking.
- To quantify eye movements in healthy individuals and patients with gait-related visual disturbances.
Main Methods:
- A video camera system utilizing a charge-coupled device (CCD) image sensor was employed.
- Eye movements were recorded in 7 subjects, including 5 healthy adults, one patient with oscillopsia, and one with a chronic limp, while they performed stepping in place.
Main Results:
- Normal subjects exhibited minimal vertical (<0.5 degrees) and horizontal (<2 degrees) eye movements.
- The subject with a limp showed increased horizontal and vertical eye movement amplitudes.
- The patient with vertical oscillopsia displayed the largest vertical eye movement amplitude, correlating with their symptoms.
Conclusions:
- The developed CCD-based eye movement recording system effectively captures subtle gaze shifts during locomotion.
- This technology provides a valuable tool for analyzing gaze fixation mechanisms in various clinical conditions affecting gait and vision.