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Updated: Feb 15, 2026

Author Spotlight: Exploring the Link Between Time Perception of Visual Stimuli and Reading Skills
Published on: January 19, 2024
Interactive Light Stimulus Generation with High Performance Real-Time Image Processing and Simple Scripting.
László Szécsi1, Ágota Kacsó1, Günther Zeck2
1Computer Graphics Research Group, Budapest University of Technology and Economics, Budapest, Hungary.
We developed GEARS, a user-friendly software for precise light stimulation in neuroscience and ophthalmology. This GPU-accelerated framework simplifies complex visual stimulus generation and real-time control for researchers.
Area of Science:
- Neuroscience
- Ophthalmology
- Computational Vision
Background:
- Precise spatial and temporal modulation of light stimulation is crucial for research in visual neuroscience, optogenetics, ophthalmology, and visual psychophysics.
- Existing methods for generating complex visual stimuli can be cumbersome and require advanced programming skills.
Purpose of the Study:
- To develop a user-friendly and flexible software framework for generating complex light stimuli.
- To leverage GPU computing power for efficient stimulus generation and real-time parameter modification.
- To provide built-in support for external equipment and synchronization tasks.
Main Methods:
- Developed GEARS (GPU-based Eye And Retina Stimulation Software), a C++/Python hybrid utilizing OpenGL graphics.
- Employed GPU computing and GLSL shading language for computations, with automatic generation of GPU settings and shader programs.
- Implemented a game programming-inspired approach for stimulus composition using a library of basic components.
- Utilized C++ for stimulus rendering to omit intermediary libraries and enable efficient processing.
Main Results:
- GEARS offers an intuitive interface, reducing the need for elaborate programming skills.
- The software allows interactive modification of stimulus parameters during experiments.
- It supports external equipment control and synchronization via USB ports.
- GEARS efficiently handles computationally demanding tasks such as en-masse random number generation and real-time image processing.
Conclusions:
- GEARS provides a flexible, user-friendly, and powerful solution for generating complex visual stimuli.
- The framework enhances experimental efficiency and accessibility for researchers in various visual science fields.
- Its GPU acceleration and intuitive design facilitate advanced research in visual neuroscience and ophthalmology.

