Gaze Tracking Evaluation for ADHD Hyperactivity
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Solution Overview
Problem
Current evaluation methods for ADHD are inadequate in directly addressing the hyperactivity and impulsiveness of individuals, as they often rely on indirect gaze point movement analysis rather than suitable direct evaluation techniques.
Innovation Solution
An evaluation apparatus and method that includes a display, gaze point detection, region setting, and calculation of movement count between determination regions to assess gaze point movement, allowing for direct evaluation based on the subject's ability to focus on main and sub-targets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If indirect gaze point movement analysis is used to evaluate ADHD, then evaluation can be performed using existing gaze tracking technology, but the evaluation does not directly address the hyperactivity and impulsiveness characteristics of ADHD
Solution Approach 1:
The patent changes the evaluation parameter from indirect gaze duration metrics to direct gaze movement count metrics. By counting the number of times the gaze point moves between determination regions (main target region and sub-target regions), the system directly measures the hyperactive gaze movement characteristic of ADHD, making the evaluation both accurate and suitable for ADHD characteristics.
2Measurement precision
If gaze point movement count between regions is calculated to directly evaluate ADHD, then direct evaluation of ADHD characteristics is achieved, but the device complexity increases due to region setting and movement tracking requirements
Solution Approach 1:
The patent segments the display screen into multiple determination regions (main target region and sub-target regions) to enable direct evaluation of gaze movement. By dividing the evaluation space into distinct regions, the system can count transitions between regions, providing a straightforward metric for ADHD assessment without requiring complex analysis algorithms.
Solution Approach 2:
The patent introduces determination regions as intermediary zones between the gaze tracking system and the evaluation metric. These regions serve as mediators that convert continuous gaze point coordinates into discrete movement events, simplifying the evaluation process while maintaining direct measurement of ADHD characteristics.
3Ease of operation
If multiple determination regions are set for main target and sub-targets, then direct gaze movement evaluation is enabled, but the difficulty of detecting and measuring increases due to region boundary determination
Solution Approach 1:
The patent applies local quality by assigning different functions to different regions: the main target region serves as the primary focus area while sub-target regions serve as distraction areas. Each region has clearly defined boundaries and purposes, making it easier to detect and measure gaze movements without ambiguity. The region boundaries are set based on the visual elements displayed, providing natural and intuitive measurement zones.
Data Source
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AI summary
An evaluation apparatus includes a display; a detecting unit configured to detect a position of a gaze point of a subject; a display controller configured to display an evaluation image including a main target and multiple sub-targets, and instruction information for instructing the subject to gaze at the main target on the display; an region setting unit configured to set determination regions corresponding to the main target and the multiple sub-target; a determination unit configured to determine whether the gaze point is positioned within the determination regions based on the detected position of the gaze point; an arithmetic unit configured to calculate a movement count by which the gaze point has moved from one of the determination regions to another based on a determination result of the determination unit; and an evaluation unit configured to acquire evaluation data of the subject based on the movement count.