Brain-Computer Interface Using Real-Object Visual Stimuli

The patent introduces real-world objects as intermediaries between the user and the BCI system. Instead of requiring a display device, the system uses existing objects in the environment (such as buttons, switches, or other interactable elements) as the stimuli carriers. These objects serve as mediators that can be temporally modulated by light sources to evoke neural responses without requiring a dedicated display device, thus improving practicality while maintaining BCI functionality.

The patent replaces the mechanical/electronic display device with a simpler system consisting of light sources and real-world objects. Instead of using a display screen that requires power, calibration, and user interaction, the system uses light emission from simple sources (such as LEDs or flashlights) projected onto ordinary objects. This substitution eliminates the complexity of display devices while maintaining the ability to elicit neural responses for BCI control.

The patent applies local quality by making each real-world object unique in its temporal modulation characteristics. Each object is modulated at a distinct frequency or pattern, creating locally distinguishable neural response profiles. This allows the system to differentiate between multiple objects based on their unique temporal signatures, enabling accurate focus determination even when multiple objects are present in the environment simultaneously.

The patent uses periodic temporal modulation of light sources projected onto different objects to create distinguishable neural responses. By modulating light at different frequencies or patterns (such as flickering at different rates), the system creates periodic action signatures that can be detected and differentiated in neural signals. This periodic modulation allows multiple objects to be simultaneously controllable while maintaining distinguishable neural responses for accurate focus determination.