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Benign EEG Variants

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Term
Definition
Small Sharp Spikes (SSS)/Benign Epileptiform Transients of Sleep (BETS)   show
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show Best appreciated during drowsiness & light sleep. Likely present when background contains sharply contoured waveforms (6-11 Hz) & are usually recorded over the anterior or mid-temporal head regions.  
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show Seen in children & adolescents during drowsiness & light non-REM sleep. These rhythmic bursts consist of trains of arch shaped waves & occur bisynchronously or independently. The bursts are usually maximal voltage over the posterior temporal head region.  
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6-Hz Spike and Wave/Phantom Spike and Wave   show
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Rhythmic Temporal Theta Bursts of Drowsiness (RTTD)   show
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show Occurs in w/hyperventilation in adults over the age of fifty. Also present during drowsiness & rest. Consists of rhythmic, sharply contoured waveforms that evolve into a sustained 5 to 6 Hz pattern. Widespread & maximal over the parietal & posterior tempo  
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show Consists of trains of rhythmic 5-7 Hz activity recorded over midline electrodes. Recorded during awake and drowsy states in both children and adults and may have a smooth, sinusoidal, arciform, spikey, or mu like appearance.  
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show Present over skull defects. Higher in amplitude and may have a sharp appearance.  
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Created by: akesselman
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