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In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
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Fabrication of a Multiplexed Artificial Cellular MicroEnvironment Array
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Multichannel wireless ECoG array ASIC devices.

Glenn A DeMichele, Stuart F Cogan, Philip R Troyk

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    Summary
    This summary is machine-generated.

    This study introduces new wireless application-specific integrated circuits (ASICs) for electrocorticography (ECoG) arrays. These advancements aim to overcome limitations of wired systems, enabling longer diagnostic periods for epilepsy patients.

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    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Medical Devices

    Background:

    • Surgical resection of epileptogenic foci is a key treatment for intractable epilepsy.
    • Electrocorticography (ECoG) arrays help localize these foci for surgical planning.
    • Current ECoG systems with transcutaneous wires limit diagnostic duration.

    Purpose of the Study:

    • To develop a wireless ECoG recording and stimulation system to extend diagnostic periods.
    • To introduce novel application-specific integrated circuit (ASIC) devices for wireless ECoG arrays.

    Main Methods:

    • Development and testing of two new 64-channel wireless silicon recording/stimulating ASIC devices.
    • Integration of ASICs with SIROF electrodes on a polyimide substrate for a wireless ECoG array.

    Main Results:

    • Successful development and testing of new ASIC devices for wireless ECoG systems.
    • The new ASICs are designed to overcome limitations of existing wired ECoG technology.

    Conclusions:

    • Wireless ECoG systems offer a potential solution to extend diagnostic periods for epilepsy.
    • The developed ASIC devices are crucial components for advancing wireless ECoG technology.