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A case-control study of a benign electroencephalographic variant pattern.

M S Batista1, C F Coelho, M M de Lima

  • 1Hospital São Paulo/Escola Paulista de Medicina (EPM)/Universidade Federal de São Paulo (UNIFESP), Brasil.

Arquivos De Neuro-Psiquiatria
|February 10, 2000
PubMed
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Wicket spikes (WS) are a common, benign variant of electroencephalogram (EEG) findings, primarily observed in adults during sleep. These EEG patterns are age-related and not indicative of epilepsy or cerebrovascular disorders.

Area of Science:

  • Neurology
  • Neurophysiology

Background:

  • Wicket spikes (WS) are a recognized, benign variant in electroencephalogram (EEG) recordings.
  • These EEG patterns are primarily observed in adults during states of somnolence, typically in temporal regions.
  • WS can present as isolated events or in trains, occasionally posing diagnostic challenges in differentiating them from epileptiform activity.

Purpose of the Study:

  • To investigate the prevalence and clinical associations of wicket spikes (WS) in electroencephalogram (EEG) recordings.
  • To determine the relationship between WS and demographic factors, neurological conditions, and clinical symptoms.
  • To clarify the significance of WS as a potential indicator of underlying pathology.

Main Methods:

  • A retrospective review of 2,000 electroencephalogram (EEG) recordings was conducted.

Related Experiment Videos

  • Sixty-five EEGs exhibiting wicket spikes (WS) were identified and compared with 65 age- and sex-matched control EEGs without WS.
  • Statistical analysis was employed to assess associations between WS and various clinical and demographic variables.

    • Main Results:

    • Wicket spikes (WS) were identified in 3.25% of the reviewed electroencephalograms (EEGs).
    • A statistically significant association was found between WS and age over 33, with increased presence in individuals over 65 and absence in adolescents.
    • After controlling for age, associations with cerebrovascular disorders and headache diminished, and no significant association with epilepsy or female predominance was observed.

    Conclusions:

    • Wicket spikes (WS) are a nonspecific, age-related normal variant of electroencephalogram (EEG) findings.
    • The presence of WS is not reliably associated with epilepsy or cerebrovascular disorders when age is considered.
    • WS are common in adults during somnolence and should be interpreted within the context of the patient's age and clinical presentation.