Touch Screen Stress Analyzer Using Muscle Tremor Detection
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Solution Overview
Problem
Current truth verification methods, such as voice stress analysis and polygraph techniques, are limited in accurately measuring emotional reactions and detecting deception, as they rely on physiological characteristics and cognitive evaluations, which may not capture the full spectrum of emotional responses.
Innovation Solution
A touch screen computer system that captures and analyzes muscle tremor reactions to stimuli, converting touch data into digital signals to assess emotional responses, using irrelevant and relevant questions to establish a baseline and detect deviations, thereby determining disclosure accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voice stress analysis and polygraph techniques are used to measure emotional reactions, then physiological characteristics can be detected, but measurement precision is limited due to reliance on cognitive evaluations and indirect physiological indicators
Solution Approach 1:
The patent replaces physiological measurement systems (voice stress, skin resistivity, heart rate) with a direct mechanical interaction system where the subject physically touches the display device. This substitution captures involuntary muscle tremor and touch pressure data directly, eliminating the need for indirect physiological indicators and cognitive evaluation, thereby improving both measurement precision and reliability in detecting emotional reactions and deception.
2Loss of information
If multiple physiological characteristics are measured simultaneously, then comprehensive emotional reaction data can be obtained, but device complexity increases
Solution Approach 1:
The patent merges multiple measurement functions into a single integrated display device that the subject touches. The device simultaneously captures touch pressure, muscle tremor, and temporal characteristics through one unified interface, eliminating the need for separate sensors for skin resistivity, heart rate, and respiration. This consolidation maintains comprehensive emotional reaction data while significantly reducing device complexity.
Solution Approach 2:
The display device serves multiple functions: it presents visual stimuli, captures touch pressure data, detects muscle tremor, and records temporal characteristics of the touch response. This multi-functionality allows the system to obtain comprehensive emotional reaction data through a single device, avoiding the complexity of multiple specialized measurement instruments.
3Measurement precision
If direct physical interaction is captured through touch screen, then involuntary muscle tremor can be detected with higher precision, but the system requires sophisticated data processing algorithms
Solution Approach 1:
The system performs preliminary data processing by establishing a baseline of normal touch characteristics for each subject before conducting the actual deception detection. This baseline includes normal touch pressure, tremor characteristics, and temporal patterns. During the test, the system compares real-time touch data against this pre-established baseline, simplifying the detection process and reducing the complexity of real-time analysis while maintaining high precision in detecting deviations caused by deception.
Data Source
AI summary
The Psychophysiological Touch Screen Stress Analyzer is capable of capturing information on how a person emotionally reacts to a series of verbal, visual, or written stimulus when the person touches the touch screen computer monitor in response to the stimulus.