Journal ArticleDOI
The influence of amplifier, interface and biological noise on signal quality in high-resolution EEG recordings
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TLDR
It is illustrated experimentally that up to 100 Hz S/N practically depends only on cortical generated background noise, while at a few hundred Hz or more amplifier and thermal noise of interelectrode resistance are the major sources.Abstract:
First, the intrinsic random noise sources of a biopotential measurement in general are reviewed. For the special case of an electroencephalographic (EEG) measurement we have extended the commonly used amplifier noise model by biological generated background noise. As the strongest of all noise sources involved will dominate the resulting signal to noise ratio (S/N), we have investigated under which conditions this will be the case. We illustrate experimentally that up to 100 Hz S/N practically depends only on cortical generated background noise, while at a few hundred Hz or more amplifier and thermal noise of interelectrode resistance are the major sources.read more
Citations
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Dry-Contact and Noncontact Biopotential Electrodes: Methodological Review
TL;DR: This paper explores the use of dry/noncontact electrodes for clinical use by first explaining the electrical models for dry, insulated and noncontact electrodes and show the performance limits, along with measured data and an extensive review of the latest dry electrode developments in the literature.
Journal ArticleDOI
MEG/EEG sources of the 170-ms response to faces are co-localized in the fusiform gyrus.
I. Deffke,Tilmann Sander,J. O. Heidenreich,Werner Sommer,Gabriel Curio,Lutz Trahms,Andreas Lueschow +6 more
TL;DR: The current study aimed to specify the relation of the dipolar sources underlying N170 and M170, an important computational step in face processing, which was measured simultaneously during the presentation of unfamiliar faces.
Journal ArticleDOI
How to record high‐frequency oscillations in epilepsy: A practical guideline
Maeike Zijlmans,Gregory A. Worrell,Matthias Dümpelmann,Thomas Stieglitz,Andrei Barborica,Marcel Heers,Akio Ikeda,Naotaka Usui,Michel Le Van Quyen +8 more
TL;DR: Improved acquisition and electrode technology have revealed that high‐frequency oscillations within the 80–500 Hz frequency range provide the neurophysiologist with new information about the extent of the epileptogenic tissue in addition to ictal and interictal lower frequency events.
Journal ArticleDOI
Crowdsourcing seizure detection: algorithm development and validation on human implanted device recordings
Steven N. Baldassano,Benjamin H. Brinkmann,Hoameng Ung,Tyler Blevins,Erin C. Conrad,Kent W. Leyde,Mark J. Cook,Ankit N. Khambhati,Joost B. Wagenaar,Gregory A. Worrell,Brian Litt +10 more
TL;DR: A crowdsource competition to crowdsource the development of seizure detection algorithms using intracranial electroencephalography from canines and humans with epilepsy, which sets a new reproducible benchmark for personalized seizure detection.
Journal ArticleDOI
Review of semi-dry electrodes for EEG recording
TL;DR: This review provides valuable technical support for the development of semi-dry electrodes toward emerging practical applications and combines the advantages of both wet and dry electrodes while addressing their respective drawbacks.
References
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Journal ArticleDOI
Thermal Agitation of Electricity in Conductors
TL;DR: In this article, the effect of electric charge fluctuation in all conductors, producing random variation of potential between the ends of the conductor, has been measured by a vacuum tube amplifier and thermocouple, and can be expressed by the formula
Journal ArticleDOI
Skin impedance from 1 Hz to 1 MHz
TL;DR: The impedance of skin coated with gel but otherwise unprepared was measured at ten sites on the thorax, leg, and forehead of ten subjects, which suggests that the variation in skin impedance can cause errors in two-electrode electrical impedance tomographs.
Journal ArticleDOI
Investigation into the origin of the noise of surface electrodes.
TL;DR: It was found that the noise mainly originates in the electrolyte-skin interface and that it is highly dependent on the electrode gel used and the skin properties of the test subject, as well as the contribution of EMG signals to the total noise level.
Journal ArticleDOI
Amplitudes and latencies of single-trial ERP's estimated by a maximum-likelihood method
P. Jaskowski,R. Verleger +1 more
TL;DR: The authors present a solution in which amplitude variability is also allowed to estimate the P3 component in single trials and showed some advantage of the method over two other methods commonly used in event-related potentials research.
Journal ArticleDOI
The design of low-noise amplifiers
TL;DR: In this paper, the essential theory and practical considerations for the design of low-noise amplifiers are gathered and organized to a uniform presentation, and the relevant material is quite simple and straightforward, hopefully bringing within the reach of the interested circuit designer the "art" of lownoise-amplifier design.
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