High-Resolution Force Sensor Grid for Behavioral Tracking
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Solution Overview
Problem
Current behavioral assessment tools for small test subjects, such as genetically manipulated mice, are limited by constraining behaviors, lack of spatial resolution, and limitations in frame rates and lighting conditions, making it difficult to accurately track movement and assess behavior effectively.
Innovation Solution
A high-resolution force module with multiple force sensors and a control system that processes signals to analyze the behavior of test subjects, allowing for the tracking of movements and correlations with genetic or chemical modifications, and providing detailed behavioral assessments without restricting the subject's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If photobeam actometers are used for behavioral assessment, then movement detection is enabled, but spatial resolution is insufficient
Solution Approach 1:
The surface is divided into multiple discrete force sensing elements arranged in a grid pattern, allowing independent measurement of forces at different spatial locations. This segmentation provides high spatial resolution by detecting which specific elements are activated and the magnitude of force on each element, enabling precise tracking of limb positions and movements.
2Measurement precision
If video tracking methods are used, then behavioral visualization is achieved, but frame rates and spatial resolution are limited
Solution Approach 1:
The system replaces optical/video-based measurement systems with a direct mechanical sensing approach using force sensing elements. This substitution eliminates frame rate limitations associated with video capture and processing, providing continuous real-time force data at high sampling rates without being constrained by lighting conditions or spatial resolution limits of camera systems.
3Adaptability or versatility
If rotarod is used for motor behavior assessment, then rotational movement measurement is enabled, but behavior expression is constrained
Solution Approach 1:
The array of force sensing elements provides a universal measurement platform that can detect multiple types of behaviors simultaneously without requiring specialized apparatus for each behavior type. The system can assess locomotion, rearing, jumping, grooming, and other behaviors on a single flat surface, eliminating the need to constrain animals to specific apparatus like rotarod and allowing natural behavior expression.
4Measurement precision
If high resolution force sensors are used, then force detection sensitivity is improved, but device complexity increases
Solution Approach 1:
Multiple force sensing elements are merged into a single integrated measurement surface that functions as one cohesive system. The individual elements are arranged in a grid pattern and processed collectively by a control system that integrates signals from all elements to provide comprehensive behavioral analysis, reducing overall system complexity while maintaining high detection sensitivity through the combined array.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables comprehensive behavioral analysis of small test subjects with high sensitivity and spatial resolution, allowing researchers to accurately measure and correlate behavioral changes with genetic or chemical modifications, regardless of lighting conditions, and without constraining the subject's movement.
Implementation Method 1
a high resolution force module having a first surface, the first surface of the high resolution force module can at least partially include a plurality of force sensors each capable of sensing forces less than a first amount of force
Data Source
AI summary
Implementations of the present invention relate to for analyzing behavior of small live test subjects. More specifically, methods and devices of the present invention can allow a researcher to use a single device for analyzing effects of genetic modifications made to the test subjects on the test subject's behavior and movements. Additionally, the methods and devices may allow for analysis of effects that various medications may have on the test subject's behavior and movement.