Closed-Loop Transcranial Stimulation Using Optical Brain Feedback
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Solution Overview
Problem
Existing techniques for treating neurological conditions such as ADHD lack effective methods to tailor electrical brain stimulation based on individual brain activity, leading to inconsistent treatment outcomes.
Innovation Solution
A system that delivers transcranial electrical stimulation and adjusts parameters based on real-time brain activity monitoring using optical sensors, allowing for closed-loop control and customization to improve treatment efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electrical brain stimulation is delivered using fixed parameters, then the treatment can be applied broadly, but the treatment effectiveness varies due to lack of customization to individual brain activity
Solution Approach 1:
The system implements a closed-loop feedback mechanism where optical sensors continuously monitor brain activity in real-time, and this information feeds back to dynamically adjust stimulation parameters. The control system receives sensor data, processes it to determine brain activity levels, and automatically modifies stimulation characteristics accordingly, creating an adaptive treatment that responds to individual patient needs.
Solution Approach 2:
The patent transforms the static, fixed-parameter stimulation approach into a dynamic system where stimulation parameters continuously adapt based on real-time brain activity measurements. The system adjusts frequency, amplitude, and other parameters dynamically during treatment sessions to optimize effectiveness for each patient's current brain state.
2Reliability
If real-time optical sensors are used to monitor brain activity, then stimulation parameters can be adjusted for better efficacy, but the device complexity and cost increase
Solution Approach 1:
The system integrates multiple functions into a unified platform: optical sensors for brain activity monitoring, control circuitry for signal processing, and electrical stimulation delivery all within one system. This multi-functional integration allows the same device to perform both monitoring and treatment, reducing the need for separate systems and making the technology more accessible.
Solution Approach 2:
The control system acts as an intermediary between the optical sensors and the electrical stimulation generator. It receives raw sensor data, processes it to extract meaningful brain activity information, and translates this into appropriate stimulation parameter adjustments, bridging the gap between monitoring and treatment functions.
3Measurement precision
If stimulation parameters are dynamically adjusted based on brain activity, then treatment outcomes improve, but the measurement and control difficulty increases
Solution Approach 1:
The system replaces complex mechanical or invasive measurement methods with optical sensing technology. Optical sensors use light-based detection to monitor brain activity non-invasively, avoiding the complexity and risks associated with electrical electrodes or surgical implants while achieving sufficient measurement precision for clinical applications.
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
The system ensures that the stimulation reaches the desired brain regions effectively, enhancing cognitive performance by adjusting parameters to match individual brain responses, thereby improving treatment outcomes for neurological conditions.
Implementation Method 1
receive sensor data from one or more optical sensors arranged to be positioned in proximity to the targeted region
Implementation Method 2
send stimulation instructions to an electrical stimulation generator to cause the electrical stimulation generator to deliver transcranial electrical stimulation
Data Source
AI summary
A system for controlling delivery of electrical stimulation to a subject. The system comprises a control device configured to send stimulation instructions to an electrical stimulation generator to cause the electrical stimulation generator to deliver transcranial electrical stimulation to one or more electrodes arranged to be positioned in proximity to a targeted region of the brain of the subject. The stimulation instructions comprise stimulation parameter value(s). The control device is configured to receive sensor data from optical sensor(s) arranged to be positioned in proximity to the targeted region and transmit updated stimulation instructions comprising updated simulation parameter value(s) to the electrical stimulation generator to cause the electrical stimulation generator to modify characteristic(s) of the stimulation. The system is configured to analyse the sensor data to determine an activity measure and determine updated stimulation parameter value(s) based on the determined activity measure.