Isolating Cerebral Cognition Time from Motor Reaction
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Solution Overview
Problem
Current methods for recording cerebral cognition time are not precise enough, as they are influenced by motor reaction times and individual factors, limiting their clinical value in diagnostics and therapy.
Innovation Solution
A method that involves presenting stimuli with varying degrees of difficulty in a random sequence, measuring reaction times, and using an exponential function to derive a correction value that isolates cerebral cognition time from motor activity, allowing for precise recording of cerebral cognition time and sensory threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reaction time is measured from stimulus presentation to motor response completion, then the measurement includes both cerebral cognition and motor response components, but this makes it impossible to precisely differentiate cerebral cognition time from motor reaction time
Solution Approach 1:
The patent segments the total reaction time measurement into two distinct components: cerebral cognition time and motor reaction time. This is achieved by presenting stimuli at varying difficulty levels and using the asymptotic behavior of reaction times to separate the cognitive processing component from the motor response component, allowing precise measurement of cerebral cognition time independent of motor factors.
Solution Approach 2:
The patent changes the parameter of stimulus difficulty level to differentiate between cognition and motor components. By presenting stimuli ranging from easily recognizable to barely recognizable, the method exploits the fact that cerebral cognition time varies with difficulty while motor reaction time remains relatively constant, enabling mathematical separation of the two components.
2Measurement precision
If stimuli with varying degrees of difficulty are presented to determine sensory threshold, then the measurement becomes more comprehensive, but the influence of motor reaction time on the results increases
Solution Approach 1:
The patent extracts the motor reaction time component from the total reaction time measurement. By analyzing the asymptotic behavior of reaction times across different stimulus difficulty levels, the method isolates and removes the motor component, leaving only the pure cerebral cognition time data for sensory threshold determination.
Solution Approach 2:
The patent uses feedback from the relationship between stimulus difficulty and reaction time to correct for motor influences. The measured reaction times at various difficulty levels provide feedback that allows calculation of the motor component, which is then subtracted to obtain accurate cognition time measurements for threshold determination.
3Adaptability or versatility
If individual factors such as dexterity and motor nerve health are considered in reaction time measurement, then the measurement becomes more comprehensive, but the specificity of cerebral cognition assessment decreases
Solution Approach 1:
The patent applies dynamics by making the stimulus difficulty level variable rather than fixed. By dynamically adjusting and varying the difficulty of presented stimuli, the method creates a range of conditions where the cognitive component varies systematically while the motor component remains relatively stable, enabling separation of the two factors.
Solution Approach 2:
The patent uses periodic presentation of stimuli at different difficulty levels to gather multiple data points. This periodic action across varying conditions allows statistical and mathematical analysis to separate the consistent motor reaction component from the variable cognitive processing component, achieving specificity in cognition assessment.
Data Source
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AI summary
A procedure for recording the cerebral cognitive time of a test subject P, characterized by the following procedural steps: (a) providing a stimulus for an individual stimulus as a task for the test subject P to recognize and investigate the cognitive time of the test subject P, (b) presenting the stimulus for a predetermined duration so that the test subject P can perceive the stimulus, (c) the test subject P's reaction to the perceived stimulus within a reaction time T, wherein the reaction time is divided at least into a cognitive and a motor component, (d) determining the reaction time T as the duration between the presentation of the stimulus and the motor response of the test subject P as a consequence of the stimulus, wherein procedural steps (a) to (d) are performed continuously with stimuli, preferably stimuli of the same type or category.The test is conducted with varying cognitive difficulty levels S for the test subject, generating a series of reaction time measurements for each cognitive difficulty level. To capture cerebral cognitive time, the reaction time measurements are corrected to a derived cognitive time K(x), such that the reaction time measurements T are adjusted by removing a motor reaction time component T1, which results from the asymptotic progression of the measurements towards lower difficulty levels S.