American Clinical Neurophysiology Society Guideline 2: Guidelines for Standard Electrode Position Nomenclature

Acharya, Jayant N.; Hani, Abeer J.; Cheek, Janna; Thirumala, Parthasarathy D.; Tsuchida, Tammy N.

doi:10.1080/21646821.2016.1245558

Cited by 125 publications

(108 citation statements)

References 4 publications

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“…In certain circumstances, additional electrodes (such as F9, T9, P9; F10, T10, P10) might provide a better sampling of inferior frontal and temporal lobes in patients with suspected epilepsy and presurgical patients . Additional electrodes may be required for some patients . In the course of epilepsy surgery evaluation, when seizures cannot be localized adequately by scalp EEG, monitoring with intracranial EEG electrodes may be necessary …”

Section: Veeg In the Emumentioning

confidence: 99%

Indications and methodology for video‐electroencephalographic studies in the epilepsy monitoring unit

et al. 2017

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SummaryAlthough the epilepsy and neurology communities have position papers on a number of topics pertaining to epilepsy diagnosis and management, no current paper exists for the rationale and appropriate indications for epilepsy monitoring unit (EMU) evaluation. General neurologists, hospital administrators, and insurers also have yet to fully understand the role this type of testing has in the diagnosis and management of individuals with paroxysmal neurologic symptoms. This review outlines the indications for long-term video-electroencephalography (VEEG) for typical elective admissions to a specialized inpatient setting. The common techniques used in EMUs to obtain diagnostic information are reviewed. The added benefit of safety measures and clinical testing above that available for routine or long-term ambulatory electroencephalography is also discussed. The indications for admission to the EMU include differential diagnosis of paroxysmal spells, characterization of seizure types, presurgical epilepsy evaluations, seizure quantification, monitoring medication adjustment in a safe setting, and differentiation between seizures and side effects. We conclude that the appropriate use of this specialized testing can lead to an early and correct diagnosis in a variety of clinical circumstances. The EMU evaluation is considered the gold standard test for the definitive diagnosis of epilepsy and seizure-like spells. K E Y W O R D Sepilepsy monitoring, epilepsy surgery, inpatient specialized testing, nonepileptic events of Virginia

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Section: Veeg In the Emumentioning

confidence: 99%

Indications and methodology for video‐electroencephalographic studies in the epilepsy monitoring unit

et al. 2017

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“…Electrophysiological data were recorded using Ag/AgCl electrodes with a BrainAmp DC amplifier (Brain Products GmbH, Gilching, Germany) with a sampling rate of 1000 Hz. 73 electrodes were placed according to the 10-10 system (Acharya et al, 2016), with location AFz serving as ground and the right earlobe as reference. Three electro-oculogram channels were placed in a triangular montage, with channels on the forehead and on the left and right infraorbital rim (Plöchl et al, 2012).…”

Section: Eeg Acquisitionmentioning

confidence: 99%

Spatially modulated alpha-band activity does not mediate tactile remapping and fast overt orienting behavior

König

Heed

2019

Preprint

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Posterior oscillatory alpha-band activity is commonly associated with spatial-attentional orienting and prioritization across sensory modalities. It has also been suggested to mediate the automatic transformation of tactile stimuli from a skin-based, somatotopic reference frame into an external one. Previous research has not convincingly separated these two possible roles of alpha-band activity. In particular, the use of delay paradigms, implemented to allow temporal evolution of segregable oscillatory brain responses to stimulus, motor planning, and response, have prohibited strong conclusions about a causal role of oscillatory activity in tactile-spatial transformations. Here, we assessed alpha-band modulation with massive univariate deconvolution, an analysis approach that disentangles brain signals overlapping in time and space. Thirty-one participants performed a delay-free, visual serialsearch task in which saccade behavior was unrestricted. A tactile cue to uncrossed or crossed hands was either informative or uninformative about visual target location. Alpha-band suppression following tactile stimulation was lateralized relative to the stimulated hand over centro-parietal sensors, but relative to its external location over parieto-occipital sensors. Alpha-band suppression reflected external touch location only after informative cues, challenging the proposition that posterior alpha-band lateralization indexes automatic tactile transformation. Moreover, alphaband suppression occurred ~200 ms later than externally directed saccade responses after tactile stimulation. These findings suggest that alpha-band activity does not play a causal role in tactilespatial transformation but, instead, reflects delayed, supramodal processes of attentional reorienting.

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“…In der Regel ist es ausreichend, das konventionelle VEP mit einem einzigen Ableitelektrodenpaar, okzipital-zentral vs. frontozentral [30] zu messen, es gibt aber Fragestellungen, die Mehrkanalableitungen erfordern. So ist beispielsweise das Visus-VEP, bei dem mithilfe einer Reihe unterschiedlich fein strukturierter Reizmuster die Sehschärfe objektiv abgeschätzt wird, mit einer sogenannten Laplace-Montage (Verrechnung der Signale mehrerer benachbarter Elektroden) genauer als mit einer Einzelelektrodenableitung [31 -33].…”

Section: Vep Und Mfvepunclassified

Mit klinischer Elektrophysiologie hinter die Netzhaut

Hoffmann

Heinrich

Thieme

et al. 2018

Klin Monatsbl Augenheilkd

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ZusammenfassungElektrophysiologische Ableitungen von Netzhaut und Kortex sind zielführend, um auch postretinale Schädigungen im Rahmen ophthalmologischer und neuroophthalmologischer Diagnostik aufzudecken. Dabei dienen Musterelektroretinogramme (PERG) der Überprüfung der retinalen Ganglienzellen und visuell evozierte Potenziale (VEP) der Überprüfung der Sehbahn in ihrer Gesamtheit. Sie unterstützen damit die objektive Funktionsüberprüfung der Sehbahn sowie die Differenzialdiagnostik. Während konventionelle elektrophysiologische Verfahren nur bedingt geeignet sind, lokale gesichtsfeldspezifische Defekte aufzudecken, ist dies die Domäne der multifokalen Elektrophysiologie. Diese ermöglicht eine ortsaufgelöste Beurteilung mit dem multifokalen PERG (mfPERG) und dem multifokalen VEP (mfVEP) bis hin zur objektiven Gesichtsfeldtestung mit dem mfVEP. Entscheidend für den erfolgreichen Einsatz dieses Methodenspektrums ist allerdings die Berücksichtigung möglicher Störfaktoren bei der Durchführung der Messungen und bei der Interpretation der Ergebnisse. Dies wird im vorliegenden Artikel anhand einer Reihe typischer Anwendungsbeispiele verdeutlicht.

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American Clinical Neurophysiology Society Guideline 2: Guidelines for Standard Electrode Position Nomenclature

Cited by 125 publications

References 4 publications

Indications and methodology for video‐electroencephalographic studies in the epilepsy monitoring unit

Indications and methodology for video‐electroencephalographic studies in the epilepsy monitoring unit

Spatially modulated alpha-band activity does not mediate tactile remapping and fast overt orienting behavior

Mit klinischer Elektrophysiologie hinter die Netzhaut

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