Evoked Potential Display Using Color-Coded Vertical Line Mapping
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Solution Overview
Problem
Existing methods for displaying evoked potentials struggle to effectively visualize low-amplitude brain signals amidst background noise and artifacts, making it difficult to detect subtle changes in brain activity over time.
Innovation Solution
A graphical display method that transforms averaged evoked potentials into single vertical lines with color-coded amplitude bands, allowing real-time visualization of brain activity by representing different amplitude ranges with distinct colors, facilitating easier detection of changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If evoked potentials are displayed using conventional averaging methods, then background noise is reduced, but signal latency information is lost and time-locked response details are obscured
Solution Approach 1:
The patent segments the evoked potential signal into multiple time-locked response components, each representing different latency periods. Instead of averaging all signals together which obscures temporal details, the system divides the signal into discrete segments that can be individually analyzed and displayed, preserving latency information while maintaining noise reduction through selective averaging within each segment.
Solution Approach 2:
The patent transforms the conventional single-dimensional averaged waveform into a multi-dimensional display that includes time-locked response amplitude, latency, and frequency components. By adding temporal dimensionality to the display, the system preserves latency information that would otherwise be lost in traditional averaging, while still achieving noise reduction through computational processing across multiple dimensions.
2Measurement precision
If signal averaging is performed to reduce background noise, then measurement precision improves, but the complexity of processing and analyzing the data increases
Solution Approach 1:
The patent applies preliminary signal processing techniques before full averaging, including pre-processing steps that enhance the signal characteristics and reduce noise early in the process. By performing preliminary actions on individual signals before aggregation, the system reduces the computational burden of subsequent averaging operations while maintaining measurement precision.
Solution Approach 2:
The patent extracts specific time-locked response components from the raw signal data before performing averaging operations. By separating and extracting only the relevant signal portions that contain the evoked potential information, the system reduces the amount of data requiring complex processing while preserving the essential measurement precision.
3Device complexity
If conventional display methods are used for evoked potentials, then the display is simple, but clinically significant information such as latency and temporal patterns is not adequately visualized
Solution Approach 1:
The patent enhances the conventional two-dimensional waveform display by incorporating additional dimensions such as latency markers, time-locked response amplitude spectra, and temporal pattern indicators. This multi-dimensional visualization approach maintains the simplicity of the basic waveform display while overlaying additional layers of clinical information that improve diagnostic capability without overwhelming the user.
Solution Approach 2:
The patent applies different display qualities and levels of detail to different portions of the signal based on their clinical significance. Time-locked response components with critical latency information are displayed with enhanced visualization features, while less significant portions maintain simpler display characteristics. This selective enhancement of local display quality preserves overall simplicity while highlighting clinically important information.
Data Source
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AI summary
A method (400) for graphically displaying evoked potentials is disclosed herein. The method (400) transforms each of an averaged evoked potentials into a single vertical line, wherein a first amplitude range is represented by a first color, a second amplitude range is represented by a second color, a third amplitude range is represented by a third color and a fourth amplitude range is represented by a fourth color.