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4 Cards in this Set

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Name the three characteristics that define and describe EEG waveforms.
frequency
amplitude
location
State the frequencies of normal EEG patterns.
Beta Greater than 13 HZ
Alpha 8 to 13 Hz
Theta 3.5 to 7.5 HZ
Delta 3 Hz or less
Describe Mu and its occurrence.
Negative arch-shaped 7 to 11 Hz rhythmic activity most ofter located in C3 and C4. Can occur unilatterally or bilaterally often shifting from side to side. Does not attenuate with eye opening.
Occurs in the wake state, attenuated by making a fist with the contralateral hand or moving the contralateral arm.
Describe the Third rhythm (temporal alpha rhythm) and its occurence.
Alpha range activity located in the temporal region.
Occurs in the wake state. Seen only in patients who have a skull defect.