AR Glasses SSVEP Visual Stimulus BCI Control
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Solution Overview
Problem
Existing BCI technologies using 2D visual stimuli hinder natural AR interaction, as they do not effectively consider the surrounding environment and the control targets in real-world scenarios.
Innovation Solution
An apparatus and method for presenting a visual stimulus using augmented reality, which synthesizes virtual SSVEP-based visual stimuli onto objects in the real world, allowing for natural AR interaction by recognizing control targets through AR glasses and controlling them via a network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 2D visual stimuli are used for BCI control, then the BCI system can be implemented, but natural AR interaction is hindered
Solution Approach 1:
The patent transitions from 2D visual stimuli on monitors to 3D spatial visual stimuli in the real-world environment through AR glasses. The control targets are disposed at different positions and orientations in three-dimensional space, allowing users to interact naturally with objects in their environment while maintaining BCI functionality.
Solution Approach 2:
The patent introduces AR glasses as an intermediary device between the user and the control targets. The AR glasses present visual stimuli through the user's field of view, overlaying virtual control targets onto the real-world environment, thereby enabling natural interaction without requiring traditional monitor-based interfaces.
2Adaptability or versatility
If visual stimuli are presented on a computer monitor, then BCI control can be achieved, but spatial flexibility is restricted
Solution Approach 1:
The system moves from fixed 2D monitor display to flexible 3D spatial positioning of visual stimuli. Control targets can be disposed at various positions and orientations in the user's environment, enabling interaction with objects in space rather than being confined to a monitor screen.
Solution Approach 2:
The AR-based visual stimulus presentation system can adapt to various environments and use cases. The same system can present control targets for different devices (e.g., air conditioner, television, audio device) at different spatial locations, making the interface universally applicable across multiple contexts without requiring separate presentation systems.
3Adaptability or versatility
If SSVEP visual stimuli are synthesized to real-world objects, then natural AR interaction is enabled, but system complexity increases
Solution Approach 1:
The patent combines AR technology and BCI technology into an integrated system. The AR glasses not only present visual information but also serve as the interface for SSVEP-based BCI control. The control targets are merged with real-world objects in the user's environment, creating a unified interaction system that leverages both AR and BCI capabilities.
Solution Approach 2:
The system automatically detects the user's gaze direction and identifies which control target is being viewed, eliminating the need for manual selection or additional input devices. The SSVEP signals are automatically analyzed to determine user intent, and the corresponding control actions are executed without requiring complex manual interfaces.
Data Source
AI summary
An apparatus for presenting a visual stimulus by using augmented reality may include an augmented reality module configured to recognize a control target through an augmented reality (AR) glass, and to dispose the visual stimulus on the recognized control target, an electroencephalogram measurement module configured to measure an electroencephalogram of a user gazing at the visual stimulus, a visual stimulus detection module configured to analyze the measured electroencephalogram to detect a visual stimulus signal (VEP), and to process the detected visual stimulus signal to classify the visual stimulus and to identify the control target, and a control module configured to control the identified control target through a network.