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This paper describes the fabrication and the packaging of a flexible parylene-based multi-contact electrode embedded in a silicone-based cuff. This type of electrode is well suited for peripheral nerve recording and offers improved spatial selectivity. We conducted mechanical and electrical tests for assessing the reliability by using an accelerated lifetime protocol. Test structures made with platinum...
This paper describes the design, microfabrication, characterization and experimental validation of a 6-contact cuff electrode embedded in a parylene-based flexible support. This type of electrode is well suited for both peripheral nerve recording and stimulation and offers improved spatial selectivity as compared to conventional ring electrodes. Both measured and modeled impedance spectra are detailed...
A wireless 64-channel ElectroCorticoGram (ECoG) recording implant named WIMAGINE® has been designed for clinical applications. This active implantable medical device is able to record ECoG on 64 electrodes with selectable gain and sampling frequency, with less than 0.7µVRMS input referred noise in the [0.5Hz – 300Hz] band. It is powered remotely through an inductive link at 13.56MHz, communicates...
In order to assess the signal to noise ratio and spatial selectivity of nanostructured microelectrodes, our consortium built an original assembly of surface macroelectrodes and deep microelectrode arrays. Acute and chronic assessments were achieved based on rodent and non human primate model. Eventually, we used this device to monitor by association of the surface and deep microelectrodes nominal...
In order to understand the behavior of carbon nanotubes in-vivo, we develop an original flexible microelectrode array. We place on it two types of electrodes, carbon nanotubes (CNTs) and titanium nitride (TiN). We used this device to monitor electrocorticogram of a non-human primate during one year. Our results demonstrate the biocompatibility of our CNT. We also show the magnitude of the ECoG is...
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