Computational Modeling of Optogenetic Neuromodulation for β-Band Suppression

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Solution Overview

Problem

Current methods fail to effectively suppress β-band oscillations in the brain, which are associated with neurological and neurodegenerative diseases like Parkinson's disease, limiting the efficacy of neuromodulation treatments.

Innovation Solution

Optogenetic neuromodulation techniques are employed to inhibit or stimulate medium spiny neurons in specific brain regions, using light-responsive ion channels to modulate neuronal activity, combined with electrical stimulation and computational modeling to optimize neuromodulation targets and parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional neuromodulation methods are used, then treatment is provided, but β-band oscillations are not effectively suppressed

Engineering Contradiction:

Improveefficacy of neuromodulation treatmentVSAvoidβ-band oscillations

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention segments the globus pallidus into distinct regions (GPi and GPe) and targets specific neuron types (D1-MSNs and D2-MSNs) within each region using optogenetic techniques. This segmentation allows for precise suppression of β-band oscillations by addressing the specific neural circuits involved, rather than applying broad non-specific stimulation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention applies local quality by using cell-type-specific optogenetic targeting to modulate only the relevant neuronal populations (D1-MSNs in GPi, D2-MSNs in GPe) that generate β-band oscillations. This localized approach ensures that treatment effects are confined to the specific circuits producing the harmful oscillations, improving reliability while minimizing off-target effects.

Inventive Principle:

Principle #3Local quality

2Object-affected harmful factors

If optogenetic neuromodulation is used, then β-band oscillations are suppressed, but device complexity increases

Engineering Contradiction:

Improveβ-band oscillationsVSAvoidneuromodulation system complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The invention replaces conventional electrical stimulation mechanisms with optogenetic mechanisms that use light to control neuronal activity. This substitution enables cell-type-specific targeting through light-responsive ion channels (such as channelrhodopsin-2) expressed in specific neuron populations, allowing precise suppression of β-band oscillations without the complexity of delivering multiple electrode types or adjusting multiple electrical parameters.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention changes the fundamental parameter of stimulation delivery from electrical to optical, utilizing light wavelength, intensity, and timing to control neuronal activity. This parameter change enables selective activation or inhibition of specific neuron types expressing light-sensitive proteins, providing a more direct and less complex approach to suppressing β-band oscillations compared to conventional electrical neuromodulation.

Inventive Principle:

Principle #35Parameter changes

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 approach effectively suppresses β-band oscillations, providing a targeted therapy for neurological and neurodegenerative diseases by decoupling synchronized neurons and improving neuromodulation treatments.

Implementation Method 1

illuminating the light-responsive ion channel with light at a wavelength that activates the light-responsive ion channel, wherein conduction of ions by the light-responsive ion channel in response to absorption of light results in hyperpolarization and inhibition of the D1-MSNs or the D2-MSNs

Methodology Applied

Scientific EffectPhotoelectric Effect: Photoelectric Effect

Implementation Method 2

Optogenetic neuromodulation techniques are employed to inhibit or stimulate medium spiny neurons in specific brain regions, using light-responsive ion channels to modulate neuronal activity

Methodology Applied

Scientific EffectOptogenetics:

Data Source

PatentUS20250325707A1Solving Brain Circuit Function and Dysfunction With Computational Modeling and Optogenetic Functional Magnetic Resonance Imaging

Publication Date: 2025.10.23 THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV

AI summary

Methods, systems, and devices, including computer programs encoded on a computer storage medium are provided for optimizing neurostimulation therapy for treatment of neurological and neurodegenerative diseases. Joint dynamic causal modeling and biophysics modeling are used for optimization of the stimulation targets and parameters. In particular, methods of performing neuromodulation to suppress b-band oscillations in the brain of a subject are provided.