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13 Cards in this Set

  • Front
  • Back
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.
anterior central or frontocentral. Normal awake pattern. Accentuated by medications
normal component of drowsiness and sleep
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