Midline theta rhythm (Ciganek)

Synonyme: Ciganek rhythm

• Rhythmic train of 5-7Hz (6Hz)
• Duration: <20sec
• Smooth, sinusoidal, arch-like, spiky appearance (>50uV)
• Amplitude waxes and wanes
• Vertex (Cz)
  • Fz > Pz >> parasagittal electrodes
• Wakefulness (concentration) and drowsiness
• Children and adults
• Not associated with epilepsy

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Midline theta rhythm (Ciganek): sinusoidal theta rhythm in Fz (source)

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