ABRET Digital Instrumentation || Questions with complete answers.

A LFF setting of 5 Hz will attenuate a 5 Hz wave by approximately: a. 0.3 b. 30 mm c. 0.05 d. 5 mm correct answers 0.3 (LFF of 5 Hz will attenuate a 5 Hz wave by 30%) Gradual changes in amplitude , frequency, or spatial distribution of rhythms is known as: a. asymmetry b. attenuation c. background activity d. evolution correct answers evolution Vertical resolution a. bits b. frequencies c. amplitude d. duration correct answers amplitude The ability of an amplifier to reject like signals a. amplifier gain b. phase reversal c. common mode rejection d. sensitivity correct answers common mode rejection Which of the following principles best applies to the EEG amplifiers? a. aliasing b. sampling c. common mode rejection d. filtering correct answers common mode rejection Increasing the number of seconds displayed on the monitor a. decreases spike duration b. increases spike amplitude c. does not change spike amplitude or duration d. increases spike duration correct answers does not change spike amplitude or duration Which of the following is the most appropriate sampling rate that should be used for a HFF setting of 70 Hz, according to Nyquist theory? a. 20 p/sec