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21 Possible Causes for lt 25 hz spike and slow waves, Unilateral Centro-Temporal Spikes

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  • Juvenile Absence Epilepsy

    All patients had minimum twice EEG recordings and all had typical 3-Hz generalized spike and slow-wave discharges at least on one EEG.[] EEG shows classical generalized 3 Hz spike-and-slow-wave discharges.[] Diagnostic methods Diagnosis relies on the clinical features and on electroencephalogram (EEG) recorded awake and during sleep, that displays a generalized 3-4 Hz spike-and-slow-wave[]

  • Generalized Clonic or Tonic-Clonic Seizures

    […] generalized high-amplitude, poly spike discharges." [2] The clonic phase EEG will show "high amplitude activity that is typically interrrupted by slow waves to create a spike-and-slow-wave[]

  • Myoclonic-Astatic Epilepsy

    EEG showed long sequences of generalised irregular spike and slow waves.[] The interictal EEG revealed frequent bursts of generalized 100-200 μV, 2-4 Hz spike-and-slow-wave complexes.[] . • EEG shows frequent generalized discharges of spike/polyspike-slow wave at varying frequencies of 2.5 to 3 Hz or higher. • Differential diagnosis is often demanding and[]

  • Juvenile Myoclonic Epilepsy

    We applied dipole modeling and brain distributed source analysis to find current sources comprising spikes and slow waves of polyspike and wave complexes (PSWC) in patients[] Each SWD was divided into six distinct temporal phases: spike onset, spike peak, slow-wave onset, slow-wave ascending, slow-wave peak, and slow-wave descending phases.[] The discharge is frequently short and fragmented, the spike and slow wave complexes show interdischarge frequency variations with multiple spikes and other characteristics[]

  • Epilepsy

    waves.[] […] and slow waves); (d) occurrence at any age in childhood and adulthood; (e) frequently demonstrable aetiology (tumor, vascular); and (f) no progressive evolution of the syndrome[] Cigdem Inan Akman, Nonconvulsive Status Epilepticus and Continuous Spike and Slow Wave of Sleep in Children, Seminars in Pediatric Neurology, 17, 3, (155), (2010).[]

  • Benign Adult Familial Myoclonic Epilepsy

    […] and slow-wave complexes at 3 Hz associated with myoclonus.  Interictal EEG is variable and ranges from normal to background slowing and generalized spike and slow-wave activity[] In 1824, Calmeil used the term absence . [2] In 1935, Gibbs, Davis, and Lennox described the association of impaired consciousness and 3-Hz spike-and-slow-wave complexes on[] Ten- to 16-Hz rapid spikes with slow waves occur with myoclonic seizures, photosensitivity is common, and abnormalities may occur in sleep. 3.1.7.[]

  • West Syndrome

    […] and slow-wave activity ( Gibbs and Gibbs 1952 ).[] Interictal EEG displays diffuse and asynchronous high voltage spikes and slow waves suggesting the hypsarrhythmic pattern. B.[] It associates IS with a typical EEG pattern called hypsarrhythmia consisting of random, high-voltage, nonsynchronous spikes and slow waves and developmental delay.[]

  • Idiopathic Generalized Epilepsy

    […] and slow waves during clonic phase 70% are seizure -free under treatment In some cases, no medical therapy is necessary avoid triggers Epilepsy with myoclonic-atonic seizures[] Panayiotopoulos et al. (1994) [21] observed that 51.5% of patients had spike/multiple spike-slow wave discharges.[] […] comorbidities Epilepsy with tonic-clonic seizures alone 14–20 years Tonic-clonic seizures shortly after awakening or during relaxation Fast spikes during tonic phase; bursts of spikes[]

  • Organic Brain Syndrome

    Abstract This study addresses the prevalence of organic brain syndrome (OBS) among long-term toluene-exposed rotagravure workers who are still working. The prevalence of OBS in 22 workers exposed to toluene for a minimum of 12 years and 19 unexposed control subjects, matched for age and employment status,[…][]

  • Early Infantile Epileptic Encephalopathy Type 3

    West Syndrome (WS) aka as infantile spasms with hypsarrhythmia, EEG abnormality with asynchronous very high amplitude, irregular, continuous multifocal spike an slow wave[] […] or slow waves mainly in the rolandic regions (but may also occur elsewhere) Early myoclonic encephalopathy - Ictal EEG The myoclonia do not have an ictal EEG expression and[] […] paroxysms of polyspikes or spikes-slow waves.  Ictal EEG  Varies according to seizure type. 16.[]

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