Board Prep - Trusted Neurodiagnostic Academy - Digital Instrumentation Questions with Answers

Board Prep - Trusted Neurodiagnostic Academy - Digital Instrumentation Questions with Answers Digital calibration - correct answersEach individual electrode is compared to a system reference Analog calibration verifies the 70 Hz high filter standard setting by assessing which of the following? - correct answersThe sharpness of the tip of the calibration signal Performing square wave and biological calibration on a digital EEG instrument does which of the following? - correct answersVerifies standard instrument settings are correct before beginning the recording The energy internal to the EEG instrument used to perform square wave calibration is called ____________. - correct answersInput voltage If the activity of input 1 is more negative than input 2: - correct answersThe EEG deflection will go up If the EEG amplitude is high, you should - correct answersDecrease your sensitivity The purpose of the differential amplifier is: - correct answerscancel out external noise in both inputs The bandwidth is the... - correct answersThe frequencies inside the set filter settings The function of the HFF is: - correct answersAttenuate the high frequencies without affecting the low frequencies What causes Phase Lead? - correct answersLow Frequency Filter What causes Phase Lag? - correct answersHigh Frequency Filter The cutoff frequency - correct answersthe frequency at which there will be a 30% reduction in amplitude of the signal The time constant in the HFF - correct answersthe time it takes for the calibration signal to rise 63% A notch filter - correct answersremoves only the frequency inside the notch filter Lowering the HFF could result in: - correct answersdecrease muscle artifact