SREDA (subclinical rhythmic electrographic discharges in adults)

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SREDA (Subclinical rhythmic electrographic discharge in adults)

Starts as delta rhythm or individual sharp waves: gradual coalescence into a delta rhythm.
Delta rhythm evolves into a sharp theta rhythm of 5-7Hz
Duration of 40-80 sec
Located Parietal and Posterior temporal
Bilateral and synchronous, symmetrical
Present in wakefulness, drowsiness, stage II sleep
Trigger: Hyperventilation
Usually in people >50 years
Uncommon

Not associated with epilepsy

SREDA: bilateral synchronous parietotemporal sharp theta rhythm (double banana)

SREDA (double banana).png

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