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Related Experiment Videos

Slow sharp waves.

M Ribeiro1, E Niedermeyer, S Hertz

  • 1Sinai Hospital of Baltimore, Division of Neurology, Maryland 21215-5272, USA.

Clinical EEG (Electroencephalography)
|December 1, 1999
PubMed
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Slow sharp waves (SSHW), longer than typical sharp wave discharges, were observed in older patients with serious illnesses. Their electrophysiological basis and the cause of their prolonged duration remain unclear.

Area of Science:

  • Neurophysiology
  • Clinical Neurology
  • Epileptology

Background:

  • Slow sharp waves (SSHW) are distinct electrophysiological events characterized by longer durations (≥200 msec) compared to typical sharp wave discharges (70–200 msec).
  • These EEG patterns have clinical relevance, particularly in older adults.

Purpose of the Study:

  • To investigate the electroclinical correlation of Slow Sharp Waves (SSHW).
  • To explore the prevalence and potential significance of SSHW in a patient cohort.

Main Methods:

  • Analysis of electroencephalogram (EEG) data to identify SSHW.
  • Correlation of SSHW findings with clinical data, including patient demographics and comorbidities.

Main Results:

  • SSHW were identified in 23 patients, predominantly individuals over 50 years of age.

Related Experiment Videos

  • Patients with SSHW presented with serious illnesses of diverse etiologies.
  • Epileptic seizures were observed in a subset of patients with SSHW.

    • Conclusions:

    • SSHW are associated with serious illnesses in older adults.
    • The underlying electrophysiological mechanisms and the reason for the prolonged duration of SSHW require further investigation.
    • The clinical significance of SSHW beyond their association with severe illness is yet to be fully elucidated.