2D Cortical Electrode Array for Traveling Wave Restoration
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Solution Overview
Problem
Current brain stimulation techniques, both invasive and non-invasive, fail to effectively address the propagation of spatially traveling waves between cortical nodes, which is crucial for restoring brain function after stroke and other neurological disorders, as they primarily focus on low-frequency oscillations without considering spatial propagation and connectivity between nodes.
Innovation Solution
A two-dimensional electrode array implanted on the cortex with pre-identified crucial neural nodes, capable of measuring and adjusting stimulation signals in real-time to match the parameters of healthy cortical tissue, ensuring proper wave propagation speed, amplitude, and frequency across damaged and healthy tissue, thereby restoring connectivity and excitability between nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional brain stimulation techniques are used to treat neurological disorders, then low-frequency oscillations can be detected and stimulated, but spatial propagation of traveling waves between cortical nodes cannot be effectively addressed
Solution Approach 1:
The patent transitions from one-dimensional temporal oscillation analysis to two-dimensional spatiotemporal analysis by implementing a 2D electrode array that captures both spatial location and temporal characteristics of brain waves. This enables detection and stimulation of traveling waves propagating across cortical surfaces, addressing the spatial dimension that conventional techniques miss.
Solution Approach 2:
The cortical surface is divided into multiple discrete electrode contact points arranged in a 2D array, allowing independent measurement and stimulation at each location. This segmentation enables tracking of wave propagation paths between different cortical nodes and applying localized stimulation to restore traveling waves across damaged regions.
2Productivity
If a single stimulation signal is applied to perilesional areas, then motor task related LFOs can be potentiated, but connectivity and excitability between distributed cortical nodes cannot be restored
Solution Approach 1:
Different electrodes in the 2D array can apply different stimulation parameters (amplitude, frequency, phase) tailored to local cortical conditions. This allows customized stimulation patterns for each electrode contact, enabling restoration of traveling waves along specific propagation paths while adapting to heterogeneous tissue properties across the cortical surface.
Solution Approach 2:
The stimulation system dynamically adjusts parameters based on real-time measurements of cortical wave propagation. By continuously monitoring wave speed, amplitude, and direction between cortical nodes, the system adapts stimulation timing and intensity to maintain optimal conditions for restoring traveling waves and cortical connectivity.
3Adaptability or versatility
If manual adjustments of stimulation parameters are performed frequently, then individual brain activity can be accommodated, but treatment time and complexity increase
Solution Approach 1:
The system continuously measures cortical wave parameters (speed, amplitude, frequency) between cortical nodes and uses this feedback to automatically adjust stimulation parameters. This closed-loop control enables real-time adaptation to individual brain activity patterns without requiring manual intervention, as the system self-regulates to maintain optimal stimulation conditions.
Solution Approach 2:
The stimulation system performs self-adjustment by automatically processing measured wave data and modifying its own stimulation parameters accordingly. The embedded processing capabilities allow the device to independently determine optimal stimulation settings based on real-time cortical activity, eliminating the need for external manual tuning.
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
This approach enhances brain functionality by sustaining wave propagation, improving connectivity, and potentially leading to long-term recovery of brain functions, while also providing a tailored stimulation that adapts to individual brain activity without the need for frequent manual adjustments.
Implementation Method 1
measuring electrical cortical waves in the cortex, and based on the measured signals, evaluate said at least one parameter of cortical waves
Implementation Method 2
electrodes for emitting stimulation electrical signals in the cortex
Data Source
AI summary
An apparatus for electrical brain stimulation comprises a two dimensional electrode array designed to be implanted at the surface of the cortex of a person, said cortex having neural pre-identified nodes and including healthy cortical tissue and damaged cortical tissue, said damaged cortical tissue having at least one parameter of cortical waves which is different from parameter of healthy cortical tissue, said at least one parameter being one of cortical wave propagation speed, amplitude and frequency, said electrode array including electrodes for emitting stimulation electrical signals in the cortex and measuring electrical cortical waves in the cortex, and said electrode array being designed to cover at least part of said healthy cortical tissue and said damaged cortical tissue.