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10 Cards in this Set
- Front
- Back
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True or False
If input one is more negative than input 2 the deflection of the waveform will be up |
True
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Impedance is defined as:
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the resistance against alternating current flow
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A bipolar montage follows which rules?
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combines serial pairs of electrodes into a chain, in a chain of electrodes input 2 of one channel is the same electrode as input 1 of the next, left side electrodes appear first followed by the right side
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What is the amplitude (uV) of activity that measured 12 mm in height, if a 50 uV calibration signal measured 6 mm?
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100 uV
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nasopharyngeal electrodes are placed where:
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through the nasal passage
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If the vertical scale (sensitivity) is 5 uV/mm, then a 60uV will measure:
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12 mm
(60uV/5uV/mm) |
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Best montage to measure the amplitude of a sharp wave?
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A2 ear reference montage
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A faster sweep speed (60mm/sec) allows:
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easier measurements of faster frequencies, easier ID of 60 hz artifact, better ID of degree of synchrony between 2 hemispheres.
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The use of 60hz notch filter does what:
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eliminates 60 hz activity only
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The average reference recording is best used for:
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localize focal activity
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