Gaze Point Arrival Time Measurement for ADHD Evaluation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing evaluation methods for developmental disorders like ADHD are not directly suitable for the hyperactive and impulsive characteristics of individuals with ADHD, as they rely on indirect measurements of gaze point movement.
Innovation Solution
An evaluation apparatus and method that includes a display, gaze point detection, and determination regions to measure the arrival time of the gaze point at specific regions, allowing for a direct evaluation of ADHD based on the subject's gaze point behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If indirect measurement methods (comparing retention time of gaze point) are used to evaluate ADHD, then the evaluation can be performed with existing gaze tracking technology, but the evaluation is not directly suitable for the hyperactive and impulsive characteristics of ADHD
Solution Approach 1:
The patent changes the measurement parameter from retention time (indirect measure) to arrival time (direct measure). By measuring when the gaze point first arrives at a sub-target image after appearing, the system directly captures the impulsive gaze behavior characteristic of ADHD, improving both measurement precision and direct suitability for ADHD evaluation.
2Measurement precision
If multiple sub target images are displayed around the main target image, then the gaze point behavior can be more comprehensively measured, but the device complexity and evaluation process become more complex
Solution Approach 1:
The patent segments the evaluation task by dividing the gaze behavior measurement into discrete components: multiple sub-target images are positioned at specific locations around the main target, each with its own determination region. This segmentation allows comprehensive gaze behavior measurement while maintaining systematic control over the evaluation process.
Solution Approach 2:
The patent introduces determination regions as intermediary zones between the sub-target images and the gaze point detection system. These regions serve as mediators that simplify the measurement process by defining clear boundaries for detecting gaze point arrival, reducing the complexity of precise gaze tracking while maintaining measurement accuracy.
3Measurement precision
If the gaze point arrival time is measured from predetermined time to first arrival time, then the evaluation directly reflects ADHD characteristics, but the measurement requires precise timing control
Solution Approach 1:
The patent implements preliminary action by pre-defining determination regions around each sub-target image before the evaluation begins. This allows the system to immediately detect when the gaze point arrives at these predetermined zones, eliminating the need for complex real-time calculations and reducing timing control precision requirements while maintaining accurate arrival time measurement.
Data Source
AI summary
An evaluation apparatus includes a display; a gaze point detection 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 image, sub target images, and an instruction information to gaze at the main target image; a region setting unit configured to set determination regions for the sub target images; a determination unit configured to determine whether the gaze point is present in the determination regions based on the position of the gaze point; an arithmetic unit configured to measure an arrival time from a predetermined time to a first arrival time of the gaze point at the determination regions based on a result of the determination unit; and an evaluation unit configured to obtain an evaluation data of the subject based on an average or a total value of the arrival times.