The Eye Tracker System--a system to measure and record saccadic eye movements

Area of Science:

• Biomedical Engineering
• Ophthalmology
• Neuroscience

Background:

• Accurate measurement of eye movements, specifically saccades, is crucial for understanding visual perception and neurological function.
• Existing eye-tracking technologies often face limitations in precision, real-time processing, or user comfort.

Purpose of the Study:

• To develop and present a novel Eye Tracker System for precise saccade measurement.
• To integrate multiple components into a cohesive system for comprehensive eye movement analysis.

Main Methods:

• A custom-built system comprising a digitally driven LED target array (7x11 LEDs) and a head-mounted transducer with 24 infrared optoelectronic channels.
• Utilized Infrared Light Reflective Differentiation for eye location measurement, with optoelectronics automatically aimed at the limbus.
• Employed a multiple regression operating system for real-time eye position prediction and a graphical user interface (GUI) for system control and data management.

Main Results:

• The system successfully measures saccades by tracking eye movements across a dynamic LED pattern.
• Real-time prediction of eye position is achieved through a regression algorithm, enabling immediate data acquisition.
• The head-mounted transducer ensures subject comfort and accurate, adjustable positioning.

Conclusions:

• The developed Eye Tracker System provides a robust and accurate platform for saccade measurement and eye movement analysis.
• The integration of advanced optoelectronics, a dynamic target system, and predictive algorithms enhances research capabilities in visual neuroscience.
• The system's design facilitates data saving and retrieval, supporting further in-depth analysis.