II L normal variants Flashcards
1
Q
SREDA
A
uncommon normal variant
Adults 50+
mistaken for epileptiform
2
Q
Mittens
Medline rhythmic theta
Trace Alternant
A
all normal waveforms
3
Q
Bancaud phenomenon
A
the background does not attenuate with eye-opening
unilateral blocking
4
Q
Breech rhythm
A
focal LOW impedance
pathway THRU skull
5
Q
Bancauds Phenomenon
Alpha squeak
Paradoxical alpha (alpha rhythm on eye-opening/drowsy)
A
Normal reactions of the background
6
Q
Mu
A
seen at C3 C4
7
Q
Lambda
A
eye movement
scanning
occipital
seen during a prolonged recording
8
Q
Wickets
A
temporal
6-11 Hz
Adults 30+
negative sharp arciform
9
Q
alpha squeak
A
Variant where the PDR may appear higher in Frequency and Amplitudede