Virtual Object Model for Quantifying Hemineglect Rehabilitation
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Solution Overview
Problem
Conventional methods for evaluating and rehabilitating hemineglect symptoms, such as egocentric and allocentric neglect, require experienced evaluators and lack quantification, making it difficult to provide specialized rehabilitation training for patients with these specific symptoms.
Innovation Solution
A method and system using a virtual object model to generate sequential preliminary stimuli in a virtual space, allowing for the identification and determination of egocentric and allocentric neglect through reaction information, enabling personalized rehabilitation training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional visual stimulus generation methods using physical stimuli in real space are used, then evaluation can be conducted, but reliable and quantitative evaluation results cannot be secured
Solution Approach 1:
The patent creates a virtual copy of the real-world evaluation environment by mapping real space coordinates to virtual space coordinates. Visual stimuli are presented in a virtual environment that replicates the physical assessment conditions, allowing for standardized and quantifiable measurement of hemineglect symptoms while maintaining ecological validity.
Solution Approach 2:
The system transforms the evaluation from qualitative physical observation to quantitative digital measurement by tracking reaction times, accuracy rates, and spatial parameters in the virtual environment. This parameter transformation enables precise quantification of cognitive deficits and rehabilitation progress.
2Adaptability or versatility
If conventional evaluation methods are used, then general assessment can be performed, but specialized rehabilitation training for specific neglect types cannot be provided
Solution Approach 1:
The patent divides hemineglect assessment into distinct components: egocentric neglect evaluation and allocentric neglect evaluation. By separately measuring and analyzing these different cognitive deficits, the system can provide targeted rehabilitation training for each specific type of neglect, enhancing adaptability to individual patient needs.
Solution Approach 2:
The system dynamically adapts the virtual evaluation environment based on patient performance, adjusting stimulus parameters, spatial configurations, and task difficulty levels. This dynamic adaptation allows the same system to provide specialized rehabilitation for different neglect types while managing complexity through algorithmic control.
3Measurement precision
If experienced evaluators are used for conventional assessment, then some accuracy can be achieved, but sufficient reliability and quantification are still difficult to secure
Solution Approach 1:
The virtual evaluation system performs automated assessment and analysis without requiring expert human evaluators. The system independently presents stimuli, records responses, calculates performance metrics, and generates evaluation reports, thereby achieving consistent measurement precision while eliminating evaluator dependency and subjectivity.
Data Source
AI summary
The present disclosure relates to a method by which a device provides a service so as to enable cognitive function rehabilitation by using a virtual object model. The method includes the steps of: generating first preliminary stimuli for identifying egocentric neglect in a visual range of a subject; obtaining first reaction information about the first preliminary stimuli; determining an egocentric cognition range in which the subject can egocentrically recognize visual stimuli; sequentially generating second preliminary stimuli for identifying allocentric neglect in the egocentric cognition range; obtaining second reaction information about the second preliminary stimuli; determining an allocentric cognition range in which the subject can allocentrically recognize visual stimuli; generating input stimuli for the subject in consideration of the egocentric cognition range and the allocentric cognition range; and obtaining third reaction information, according to a predetermined reaction operation of the subject, for the input stimuli.