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Medications

practice for EEG registry

QuestionAnswer
describe the EEG seen in a patient with chronic alcohol use. low voltage fast activity, lower amplitude and decreased frequency of alpha.
What EEG effect is seen with diazepam? diffuse high amplitude beta
What EEG changes are seen with phenobarbital? Frontocentral beta activity
What is the minimal amount of recording time acceptable when performing clinical EEG? the baseline should contain at least 20 minutes of technically satisfactory recording
What is the minimum number of scalp electrodes required when performing a clinical EEG? All 21 electrodes and placements following the international 10-20 system should be used.
What are the appropriate filter setting when performing clinical EEG? The low frequency filter (LFF) should be no higher than 1Hz and the high filter should be no lower than 70 Hz
Why is the use of the 60 Hz filter discouraged when performing EEG? The 60 Hz filter can distort or attenuate spikes and should therefore only be used when other measures against 60Hz interference fail.
Created by: moeegtech