Optogenetic Stimulation and Electrophysiological Recording on Microelectrode Arrays
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Solution Overview
Problem
Current technologies lack a platform that enables simultaneous optogenetic stimulation and electrophysiological monitoring of neural activity in cerebral organoids, which is essential for detailed understanding of neural circuitry and behavior.
Innovation Solution
A platform integrating optogenetic stimulation and electrophysiological recording using a high-density microelectrode array (HD-MEA) and optoelectrical equipment, allowing for simultaneous light stimulation and neural activity recording in cerebral organoids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-density microelectrode arrays are used to increase electrode density and resolution, then measurement precision is improved, but device complexity increases due to the need for simultaneous stimulation and recording integration
Solution Approach 1:
The patent combines optogenetic stimulation and electrophysiological recording into a single integrated platform. The system merges the optical stimulation device with the high-density microelectrode array, allowing simultaneous light delivery and neural activity recording through a unified device architecture that reduces experimental complexity while maintaining high measurement precision
Solution Approach 2:
The integrated platform serves multiple functions within a single device: it can deliver optogenetic stimulation through integrated light sources, record electrophysiological signals through the HD-MEA, and control experimental parameters through software. This multi-functionality eliminates the need for separate stimulation and recording equipment, simplifying the overall device complexity while enabling high-resolution neural activity monitoring
2Adaptability or versatility
If bespoke LED panels are used for optogenetic stimulation, then stimulation capability is improved, but device complexity increases due to lack of integration with electrophysiological monitoring
Solution Approach 1:
The patent merges previously separate optogenetic stimulation systems and electrophysiological recording systems into a single integrated device. The HD-MEA platform incorporates light-emitting capabilities directly onto the electrode array substrate, allowing simultaneous stimulation and recording without requiring multiple independent equipment systems, thereby reducing overall device complexity while maintaining full adaptability for optogenetic experiments
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 platform enables high-resolution, simultaneous optogenetic stimulation and electrophysiological monitoring, facilitating the characterization of neural responses and providing insights into neural circuitry and behavior.
Implementation Method 1
an optical stimulation device configured to emit light configured to stimulate the neural tissue
Implementation Method 2
a fiber optic cannula to stimulate a human brain organoid infected with an adeno-associated virus (AAV) lentivirus to express channelrhodopsin-2 during neural recording sessions
Implementation Method 3
the electrophysiological device has a microelectrode array (MEA) configured to measure electrophysiological signals
Data Source
AI summary
An optogenetic stimulation and electrophysiological recording system includes an electrophysiological device coupled to optically active neural tissue, where the electrophysiological device has a microelectrode array (MEA) configured to measure electrophysiological signals. The system also includes an optical stimulation device configured to emit light configured to stimulate the neural tissue. The system further includes a computing device coupled to the electrophysiological device and the optical stimulation device. The computing device is configured to control the optical stimulation device to emit the light to stimulate the neural tissue and simultaneously receive electrophysiological signals from the optically stimulated neural tissue through the electrophysiological device.