Publication

Stretchable Electrodes for Neuroprosthetic Interfaces

Stéphanie Lacour, Nicolas Vachicouras, Anna Cyganowski, Ivan Rusev Minev, Katherine Marie Musick
2012
Conference Papers

Abstract

We have developed a stretchable gold microelectrode array (MEA) that can withstand the torsion requirements needed for implantable neuroprosthetic interface applications. The array is composed of thin gold (sub-100 nm thick) electrodes on a soft, 120 mu m thick polydimethylsiloxane (PDMS) silicone substrate with a patterned encapsulation layer. The impedance of individual electrodes was measured as a function of extreme torsion applied to the device, and was found to be relatively stable in the 15-75 k Omega range (f = 1kHz), and remained stable after 1000 torsion cycles.

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https://infoscience.epfl.ch/entities/publication/43a84be9-0082-43d1-9439-15b5b9e323a6

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Stéphanie Lacour, Nicolas Vachicouras, Anna Cyganowski, Ivan Rusev Minev, Katherine Marie Musick
2012
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/43a84be9-0082-43d1-9439-15b5b9e323a6

About this result

Related concepts (15)

Neuroprosthetics

Neuroprosthetics (also called neural prosthetics) is a discipline related to neuroscience and biomedical engineering concerned with developing neural prostheses. They are sometimes contrasted with a brain–computer interface, which connects the brain to a computer rather than a device meant to replace missing biological functionality. Neural prostheses are a series of devices that can substitute a motor, sensory or cognitive modality that might have been damaged as a result of an injury or a disease.

Brain–computer interface

A brain–computer interface (BCI), sometimes called a brain–machine interface (BMI) or smartbrain, is a direct communication pathway between the brain's electrical activity and an external device, most commonly a computer or robotic limb. BCIs are often directed at researching, mapping, assisting, augmenting, or repairing human cognitive or sensory-motor functions. They are often conceptualized as a human–machine interface that skips the intermediary component of the physical movement of body parts, although they also raise the possibility of the erasure of the discreteness of brain and machine.

Standard electrode potential

In electrochemistry, standard electrode potential , or , is a measure of the reducing power of any element or compound. The IUPAC "Gold Book" defines it as: "the value of the standard emf (electromotive force) of a cell in which molecular hydrogen under standard pressure is oxidized to solvated protons at the left-hand electrode". The basis for an electrochemical cell, such as the galvanic cell, is always a redox reaction which can be broken down into two half-reactions: oxidation at anode (loss of electron) and reduction at cathode (gain of electron).

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