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189 Possible Causes for Artefact - Patient Movement, Focal Epileptiform Discharges

  • Stroke

    Ictal The presence of focal, rhythmic epileptiform discharges is the most characteristic feature of the scalp EEG in patients with focal seizures, showing spatial correlation[epilepsydiagnosis.org] The most common EEG pathology was focal slowing (30; 43.5%). No epileptiform potentials were found.[ncbi.nlm.nih.gov] […] tumors increases the possibility of detection of epileptiform discharges) 16.[scielo.br]

    Missing: Artefact - Patient Movement
  • Epilepsy

    The cellular neurophysiologic correlate of an interictal focal epileptiform discharge in single cortical neurons is the paroxysmal depolarization shift (PDS).[emedicine.com] (EEG) hallmark of focal-onset seizures is the focal interictal epileptiform spike or sharp wave.[emedicine.com] For a review, see the epilepsy book of Rho, Sankar, and Cavazos. [5] For a more recent review, see Kramer and Cash. [6] Pathophysiology of focal seizures The electroencephalographic[emedicine.com]

    Missing: Artefact - Patient Movement
  • Neonatal Seizures

    OBJECTIVE: Seizures are the most common neurological complication in neonatal intensive care units. Phenobarbital (PB) remains the first-line antiepileptic drug (AED) for neonatal seizures despite known neurotoxicity. Levetiracetam (LEV) is a newer AED not approved for neonates. Retrospective and pilot studies have[…][ncbi.nlm.nih.gov]

    Missing: Artefact - Patient Movement
  • Hypoxic-Ischemic Brain Injury

    Ictal In the presence of focal seizures, focal rhythmic epileptiform discharges are seen, showing spatial correlation with the area of brain injury from which focal seizures[epilepsydiagnosis.org] […] tumors increases the possibility of detection of epileptiform discharges) 16.[scielo.br] Epileptiform discharges can coexist with focal slow activity produced by brain tumors, especially slow growth (the least destruction of the brain parenchyma with slow growth[scielo.br]

    Missing: Artefact - Patient Movement
  • Persistent Vegetative State

    For each patient an artefact-free EEG stream was fragmented into consecutive 1-minute epochs. Further data processing was performed on each separate 1-minute epoch.[openneuroimagingjournal.com] Further two patients were acquired but had to be excluded from our analyses due to excessive movement artefacts and ocular contamination of the recordings, resulting in poorly[academic.oup.com] Epochs containing artifacts due to eye movement, eyes opening, significant muscle activity, and movements on EEG channels were marked and then automatically excluded from[openneuroimagingjournal.com]

  • Hyperventilation

    Children (with HIHARS) who presented with clinical features suggestive of GTCS or focal motor seizures (with or without blank spells) and/or had epileptiform discharges on[ncbi.nlm.nih.gov]

    Missing: Artefact - Patient Movement
  • Depression

    Excessive movement or other artefact meant that three patients were removed from the ASL analyses and four from the RSFC (SI Appendix), leaving sample sizes of 16 (mean age[nature.com] Results Nineteen patients with diagnoses of treatment resistant major depression completed pre-treatment and one-day post-treatment fMRI scanning.[nature.com]

    Missing: Focal Epileptiform Discharges
  • Focal Onset Impaired Awareness Seizure

    DEFINITIONS The hallmark of partial seizures in children and adults is focal epileptiform discharges localized to a portion of one cerebral hemisphere.[mdedge.com] EEG: Normal background with focal epileptiform discharges Common examples: Common examples: Childhood absence epilepsy Juvenile myoclonic epilepsy Epilepsy with generalized[aafp.org] […] or abnormal background with focal or multifocal epileptiform discharges Common examples: Common examples: Lennox-Gastaut syndrome Temporal lobe epilepsy Progressive myoclonus[aafp.org]

    Missing: Artefact - Patient Movement
  • Endometriosis

    This reduces imaging time, movement artefacts, is more comfortable for the patient and is easier for workflow coordination.[ncbi.nlm.nih.gov] However, there appears to be equally diagnostic quality imaging obtainable with a 3 T system using fast imaging acquisition without any patient preparation.[ncbi.nlm.nih.gov]

    Missing: Focal Epileptiform Discharges
  • Idiopathic Generalized Epilepsy

    The aim of this work is to investigate focal interictal epileptiform discharges (IEDs) in IGEs, and their relation to clinical variables.[ncbi.nlm.nih.gov] Focal changes in the electroencephalography (EEG) have been reported in IGEs.[ncbi.nlm.nih.gov]

    Missing: Artefact - Patient Movement

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