EyeRIS: a general-purpose system for eye-movement-contingent display control

Area of Science:

• Vision Science
• Neuroscience
• Experimental Psychology

Background:

• Effective visual performance studies require stimulus modification based on subject eye movements.
• Eye-movement-contingent display (EMCD) methodology offers precise retinal stimulus control but faces implementation challenges.
• Existing EMCD systems are often difficult to program, inflexible, and costly, limiting widespread adoption.

Purpose of the Study:

• To introduce EyeRIS, a versatile, Windows-based system for conducting EMCD experiments.
• To evaluate EyeRIS's performance, accuracy, and capabilities in various EMCD procedures.
• To demonstrate EyeRIS's potential for novel EMCD applications not feasible with current tools.

Main Methods:

• Developed EyeRIS, an integrated hardware/software system utilizing a digital signal processor for real-time oculomotor signal processing and stimulus modification.
• Benchmarked EyeRIS performance across multiple EMCD procedures and computational tests.
• Compared EyeRIS's retinal stabilization accuracy against a standard tool.
• Assessed EyeRIS's performance in executing an advanced EMCD procedure.

Main Results:

• EyeRIS achieves a stimulus update delay of only 10 msec.
• The system demonstrated accurate implementation of EMCD procedures, including retinal stabilization, comparable to or exceeding standard tools.
• EyeRIS successfully executed complex EMCD tasks not possible with existing systems.

Conclusions:

• EyeRIS provides a flexible, economical, and high-performance solution for EMCD experiments.
• The system overcomes previous limitations, facilitating broader use of EMCD methodology in vision science.
• EyeRIS enables new research possibilities in visual attention, eye movements, and neuronal response characterization.