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13 Cards in this Set

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Frequency of alpha
8-13 hz
frequency of beta
14 hz and higher
frequency of theta
4-7.5 hz
frequency of delta
less than 4 hz
attenuates with eye opening and concentration.
Normal awake pattern.
Bilaterally synchronous or posteriorly dominant.
alpha
anterior central or frontocentral. Normal awake pattern. Accentuated by medications
beta
normal component of drowsiness and sleep
theta
4 wave patterns
alpha, beta, theta and delta
Maximal over the central vertex. Seen at onset of stage 2
Vertex waves
12-14 hz waves lasting at least 0.5 seconds.
sleep spindles
negative sharp waves followed by a positive component. lasting at least 0.5 seconds
K complexes
What is the amplitude criteria for sleep spindles and k complexes.
There is no amplitude criteria for spindles or k complexes
delta waves are i the range of _______ hz and must be at least _______ uV
0.5 to 2 hz
75 uV