Artifact and Recording Concepts in EEG

@article{Tatum2011ArtifactAR,
  title={Artifact and Recording Concepts in EEG},
  author={William O. Tatum and Barbara A. Dworetzky and Donald L. Schomer},
  journal={Journal of Clinical Neurophysiology},
  year={2011},
  volume={28},
  pages={252–263}
}
Summary: Artifact is present when electrical potentials that are not brain derived are recorded on the EEG and is commonly encountered during interpretation. Many artifacts obscure the tracing, while others reflect physiologic functions that are crucial for routine visual analysis. Both physiologic and nonphysiologic sources of artifact may act as source of confusion with abnormality and lead to misinterpretation. Identifying the mismatch between potentials that are generated by the brain from… 
Artifact-related epilepsy
  • W. Tatum
  • Medicine, Psychology
    Neurology
  • 2013
TLDR
The combined use of video and EEG has revolutionized the ability to distinguish cerebral and extracerebral influences through behavioral correlation that is time-locked to the electrophysiologic features that are present on EEG.
Artifacts That Can Be Misinterpreted as Interictal Discharges.
TLDR
This review will provide a description of the most commonly encountered artifacts that mimic spike or sharp waves, also referred to as interictal epileptiform discharges, and troubleshooting approaches to eliminate these artifacts whenever possible.
Artifact Mimicking Ictal Epileptiform Activity in EEG.
  • Jake H. McKay, W. Tatum
  • Medicine
    Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society
  • 2019
TLDR
Practical guidelines for the EEG interpreter to correctly identify physiologic and nonphysiologic artifacts capable of mimicking electrographic seizures are provided.
Computer assisted interpretation of the human EEG: improving diagnostic efficiency and consistency in clinical reviews
TLDR
Algorithms were developed to automatically characterize five common EEG background properties: the posterior dominant peak frequency; reactivity; anterior-posterior gradients; symmetry; and the presence or absence of diffuse slow-wave activity and an intuitive and efficient technique was also developed for the automated detection of inter-ictal epileptiform discharges.
EEG interpretation: common problems
TLDR
An EEG that contains epileptiform discharges has a high specificity in supporting the clinical diagnosis of epilepsy, and a clinician that lacks exposure to EEG during residency training or interprets with a known clinical bias is at risk for overinterpreting the EEG.
Study and Detection of Eye Blink Artifacts in EEG Signals
  • P. Chaturvedi, Lalita Gupta
  • Computer Science, Biology
    2018 IEEE International Students' Conference on Electrical, Electronics and Computer Science (SCEECS)
  • 2018
TLDR
This paper studies about the eye blink artifacts which make the electroencephalogram noisy and then detects the presence of these eye Blink artifacts and localize and visualize them using Spectrogram and Continuous Wavelet Transform.
Analysis of artifacts in EEG signals for building BCIs
TLDR
The objective of the work is to classify different types of artifacts, namely eye blink, head nod, head turn, and jaw movements in the EEG signal, which has a low signal to noise ratio.
Electric Fence Artifact on Ambulatory EEG and Review of Common EEG Electrical Artifacts
TLDR
A case of a patient who underwent a 72-hour AEEG to evaluate symptoms initially concerning for subclinical seizures and had a tactile encounter with an electric fence during the recording, which resulted in a unique, not previously reported, pattern clouding an otherwise normal study.
A PERFORMANCE COMPARISON AND IMPROVEMENT FOR REMOVAL OF OCULAR ARTIFACTS IN EEG-BCI
TLDR
This project aims to develop an efficient and effective method to remove ocular artifacts using two method, first method is Discrete Wavelet Transform and Adaptive Noise Cancellation and second method by using LMS algorithm.
PureEEG: Automatic EEG artifact removal for epilepsy monitoring
...
...

References

SHOWING 1-10 OF 22 REFERENCES
The Continuing Challenge of Artifacts in the EEG
ABSTRACT.From the very inception of EEG, the distinction between artifactual and cerebral electrical activity has been crucial. Dealing with artifacts effectively is an essential function of the EEG
A new muscle artifact removal technique to improve the interpretation of the ictal scalp electroencephalogram
TLDR
The first preliminary results of a clinical study illustrated that the removal of muscle artifact results in a better interpretation of the ictal EEG, leading to an earlier detection of the seizure onset and a better localization of the seizures onset zone.
Handbook of EEG Interpretation
TLDR
This handbook is a highly useful tool for residents, fellows, clinicians, and neurophysiology technologists looking for quick and reliable EEG information, regardless of specialty or level of training.
EEG monitoring in the intensive care unit: pitfalls and caveats.
  • G. B. Young, V. C. Campbell
  • Medicine
    Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society
  • 1999
TLDR
Electroencephalogram monitoring is a valuable means of monitoring thalamocortical function in the comatose, sedated, or paralyzed patient in the intensive care unit and Prompt troubleshooting and regular review sessions are two important components.
Atlas of EEG Patterns
TLDR
The text is intended primarily for neurology trainees learning to read EEGs, and teaches a useful and standardized approach to pattern recognition.
Overintepretation of EEGs and Misdiagnosis of Epilepsy
  • S. Benbadis, W. Tatum
  • Psychology, Medicine
    Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society
  • 2003
TLDR
A series of EEGs on patients who were diagnosed eventually with psychogenic nonepileptic seizures and who had an EEG read as epileptiform are reported, finding that the overinterpreted patterns tend to be normal fluctuations of background activity.
EEG background activity described by a large computerized database
Guideline 8: Guidelines for Recording Clinical EEG on Digital Media
  • Computer Science
    American journal of electroneurodiagnostic technology
  • 2006
TLDR
These recommendations describe only minimal technical standards for recording clinical EEG on digital media, and standardization of the structure and format of the data recorded is addressed separately by the ACNS document, "Standard Specification for Transferring Digital Neurophysiological Data Between Independent Computer Systems".
Clinical and EEG features of patients with EEG wicket rhythms misdiagnosed with epilepsy
TLDR
This distinctive EEG pattern should be considered in patients with clinical episodes atypical for epilepsy, after controlling for other factors, patients without major confusion during episodes were unlikely to have epilepsy.
...
...