Radiotransparent carbon electrode for ECG recordings in the catheterization laboratory

Spekhorst, Hans; SippensGroenewegen, A.; David, George K.; Rijn, C.M. van; Broekhuijsen, P.

doi:10.1109/10.1402

Cited by 12 publications

(2 citation statements)

References 8 publications

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“…The measured electrode-electrolyte impedance (both resistance and capacitive reactance) of the carbon wire electrode was larger than that of the Ag/AgCl electrode, consistent with the literature Shigemitsu et al 1980;Spekhorst et al 1988;Geddes et al 2001). A higher resistance increases thermal noise and, more significantly, the noise induced through stray capacitance.…”

Section: Electrode Impedancesupporting

confidence: 88%

An EEG (electroencephalogram) recording system with carbon wire electrodes for simultaneous EEG-fMRI (functional magnetic resonance imaging) recording

Negishi

Abildgaard

Laufer

et al. 2008

Journal of Neuroscience Methods

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Simultaneous EEG-fMRI (Electroencephalography-functional Magnetic Resonance Imaging) recording provides a means for acquiring high temporal resolution electrophysiological data and high spatial resolution metabolic data of the brain in the same experimental runs. Carbon wire electrodes (not metallic EEG electrodes with carbon wire leads) are suitable for simultaneous EEG-fMRI recording, because they cause less RF (radio-frequency) heating and susceptibility artifacts than metallic electrodes. These characteristics are especially desirable for recording the EEG in high field MRI scanners. Carbon wire electrodes are also comfortable to wear during long recording sessions. However, carbon electrodes have high electrode-electrolyte potentials compared to widely used Ag/ AgCl (silver/silver-chloride) electrodes, which may cause slow voltage drifts. This paper introduces a prototype EEG recording system with carbon wire electrodes and a circuit that suppresses the slow voltage drift. The system was tested for the voltage drift, RF heating, susceptibility artifact, and impedance, and was also evaluated in a simultaneous ERP (event-related potential)-fMRI experiment.

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Section: Electrode Impedancesupporting

confidence: 88%

An EEG (electroencephalogram) recording system with carbon wire electrodes for simultaneous EEG-fMRI (functional magnetic resonance imaging) recording

Negishi

Abildgaard

Laufer

et al. 2008

Journal of Neuroscience Methods

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“…9 Apart from its good electrical properties, the carbon electrode offers additional advantages of radiotransparency and high resistance to mechanical or chemical damage. 10 These attractive properties of carbon enable its use in various other analytical applications.…”

mentioning

confidence: 99%

Fabrication and Characterization of Sputtered-Carbon Microelectrode Arrays

et al. 1996

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This paper describes a robust and reliable process for fabricating a novel sputter-deposited, thin-film carbon microelectrode array using standard integrated circuit technologies and silicon micromachining. Sputter-deposited carbon films were investigated as potential candidates for microelectrode materials. The surface properties and cross section of the microelectrode arrays were studied by atomic force microscopy and scanning electron microscopy, respectively. Electrical site impedance, crosstalk, and lifetime (dielectric integrity) of microelectrodes in the array were characterized. Electrochemical response of the microelectrodes to hexaammineruthenium(III) chloride and dopamine were investigated by fast-scan cyclic voltammetry and high-speed, computer-based chronoamperometry; results show that thin-film carbon microelectrodes are well-behaved electrochemically. The thin carbon films offer extremely good electrical, mechanical, and chemical properties and thus qualify as viable candidates for various electroanalytical applications, particularly acute neurophysiological studies.

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