EEG 101 Final exam ( 100% Verified)

EEG 101 Final exam (Verified) 1. _____ is seen in the central regions during Stage II sleep. a. Beta b. Theta c. Sleep Spindles d. Polymorphic Delta c. Sleep spindles 2. Which filter is used to eliminate artifact caused by electrical interference? a. 10 Hz b. 15 Hz c. 35 Hz d. 60 Hz e. 70 Hz d. 60 Hz is specific in eliminating electrical or 60Hz artifact 3. A spike that has a frequency of 16 Hz has a duration of a. .06 sec. b. .6 sec. c. .6 milliseconds d. 600 milliseconds a. .06 sec. Duration = 1 divided by the duration 4. All of the following are true of alpha EXCEPT a. is a frequency of 9-10 Hz in the alert, awake adult b. is seen in the posterior head regions c. attenuates with eye opening and accentuates with eye closing d. is frequently seen in the front-central regions of the alert, awake adult d. is frequently seen in the front-central regions of the alert, awake adult 5. What affect would changing the HF from 70Hz to 30Hz have on a spike and wave complex? a. no affect b. will decrease the frequency of the spike and wave complex c. will decrease the amplitude of the slow wave d. will decrease the amplitude of the spike d. will decrease the amplitude of the spike HF affects fast wave. Spikes are fast and change in the HF will decrease the amplitude of the spike. 6. Beta activity is a. seen in the frontal regions of the alert, awake, relaxed adult b. is frequently seen in the occipital regions during drowsiness c. accentuates with eye opening d. is always indicative of barbibuate use a. seen in the frontal regions of the alert, awake, relaxed adult 7. _____ is 1 divided by the duration of the wave in seconds. a. duration b. frequency c. voltage d. amplitude b. frequency 8. What is the basic functional and structural unit of the nervous system? a. neuron b. myelin sheath c. electron d. axon a neuron 9. _____ is seen in drowsiness at frequency of 4-7hz a. alpha b. beta c. theta d. delta c. theta 10. A slow wave having three phases +,-,+ or -,+,- and that is seen in the variety of metabolic disorders is a. triphaisc b. complex c. transient d. sharp a. triphaisc 11. A slow wave has a duration of a. > 200ms b. 70-200ms c. <70ms d 20ms >200ms 12. While recording an EEG your patient has a generalized Toni-Clonic sz. What should you do ? a. Call a code b. place a tongue depressor in the patient mouth c. turn the EEG machine off d. roll the patient on their side, insure an open airway and loosen any tight clothing d. roll the patient on their side, insure an open airway and loosen any tight clothing 13. What in a digital recording allows for changing the montage at a time after the pt. leaves the lab? a. reformatting b. analog to digital convert c. common mode rejection d. Nyquist theorem a. reformatting 14. ________ is seen the occipital region of an alert, relaxed adult. a. Alpha b. Beta c. Theta d. Delta A. Alpha 15. The ACNS quidelines recommend a minimum of ______ channels of simultaneous recording for routine EEG's A. 16 B. 19 C. 21 D. 32 A. 16 16. 1Hz wave has a duration of A. 100 ms B. 200ms C. 400 ms D. 1000ms D. 1000 ms 17. If input 1 is relatively more negative then input 2 the pen will A. Deflect up B. Deflect down C. Will remain flat D. Go up and down at the same time A. Deflect up 18. If the duration of the wave is 2sec. The frequency would be A. 1Hz B. 2Hz C. 5Hz D. 10Hz C. 5Hz 19. If a patient tongue deviates toward the right upon neurological examination, what dose this suggest? A. Contralateral weakness of the facial muscles B. Bilateral hypoglossal nerve lesion C. Right sided hypoglossal nerve lesion D. Right sided trigeminal nerve lesion C. Right sided hypoglossal nerve lesion 20. _______ is expressed in cycles per sec. (CPS) or (HZ) A. Frequency B. Voltage C. Sensitivity D. Duration A. Frequency 21. A sharp wave has a duration of