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Biomedical Instrumentation Practice Test: Bioelectric Signal & Electrodes
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Bioelectrical signals are generated by nerves and muscle cells. Commonly used bioelectrical signals include electroencephalography (EEG), electrocardiography (ECG), electromyography (EMG), electrodermal activity (EDA) and heart rate variability (HRV). Electrodes transfer from the ionic conduction in the tissue to the electronic conduction which is necessary for making measurements. Biosensors are devices that detect certain biochemical signals and convert them to electrical signals that can be measured.   Topics include: Bioelectric Signals Origin, Recording Electrodes, Silver-Silver... Show more
Biomedical Instrumentation Practice Test: Bioelectric Signal & Electrodes
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25 Questions

1. Off-set potential is _____________
2. Deep-seated electrodes indicates the electric potential difference arising ________ the living tissues or cells.
3. From equipment point of view, the respiratory system in the human body is a _________ system.
4. The delta wave in EEG ranges from ___________
5. Electrode paste ____________
6. Which of the following statement is false about polarizable electrodes?
7. EKG stands for _________________
8. The ground electrode is usually positioned over which body structures?
9. The peak to peak amplitude of the waves that can be picked from the scalp is ______________
10. Which of the following electrode is manufactured by circumferential application of heat to a small area of glass tubing and pulling the glass when it gets soft?
11. Which of the following is a wireless ECG acquiring system?
12. In floating electrodes metal electrode does not make direct contact with the skin.
13. Welsh cup electrodes have __________
14. The variation of the electrical potential associated with the passage of a pulse along the membrane of a muscle cell or a nerve cell is called __________
15. Which of the following is a preferred electrode for measuring EMG?
16. Electrooculography (EOG/E.O.G.) is a technique for measuring what?
17. _______________ instrument is used to hold patients head and guide the placement of electrodes.
18. In voluntary contraction of the skeletal muscles, the muscle potential ranges from ________
19. Impedance pneumography is a commonly-used technique to monitor a person’s _______
20. Recording electrical activities associated with heart is known as ____________
21. All electrode potentials are measured with respect to which reference electrode?
22. The letter T in the EEG electrode placement system denotes?
23. The main design feature of pregelled disposable electrodes which helps to reduce the possibility of artefacts, drift and baseline wandering is _____________
24. Which rhythm is the principal component of the EEG that indicates the alertness of the brain?
25. Before placing the electrodes the skin should be __________

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