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5 Cards in this Set
- Front
- Back
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Blocked by mvmt or imagined contra-lateral limb ie..thumb
7-11 Hz 20-50 Uv Does NOT react to E/O CENTRAL HD region Arched shap waveform Bilateral, usually asynchronous |
MU
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Biphasic & Triphasic Waves
Occipital area Positive Polarity 200-500 msec duration Scanning of eyes |
LAMBDA
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4-7 Hz activity notched by a faster wave
2-10 second duration Observed in drowsiness Bilateral, often asynchronous Seen in healthy-usually young patients |
RMTD
Rhythmic Mid-Temporal Theta of Drowsiness |
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Arciform activity with sharp waves in the temporal region
drowsiness and nonrapid eye movement (NREM) light sleep, mainly in patients over 50 years of age Normal variant |
WICKET
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Comb-like 0.5-1.0 second long trains
Posterior Temporal maximum Surface positive Best displayed on referential montage Most common in teenagers Observed in drowsiness No clinical significance |
14 & 6 PER SECOND POSITIVE SPIKES
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