Recording Strategies-ABRET ASAP Questions With Complete Solutions

To enhance the background alpha and beta asymmetry in an EEG record showing moderately high voltage delta activity, the technologist should use a correct answer: shorter time constant and increased sensitivity. Laplacian montage correct answer: source reference derivation A waveform of 0.5 Hz can be best enhanced with a filter of correct answer: LF 0.3 Hz The best reference electrode in an awake patient with excessive temporal myogenic activity would be correct answer: Cz Which combination of settings will help enhance a low voltage slow wave that is being masked by muscle activity? correct answer: Sens 5; LF .3; HF 35 When attempting to minimize relentless muscle artifact on a recording, the technologist should be aware that lowering the high filter could cause the artifact to resemble: correct answer: beta activity. Which montage would be best to localize occipital spikes by phase reversal? correct answer: Circumferential bipolar montage When using the average reference, if a spike-and-wave focus appears at C3, the abnormality would be best enhanced by correct answer: Excluding C3 and surrounding electrodes from reference Referential recording is most appropriate for measuring correct answer: voltage