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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. The contraction of the skeletal muscles results in the generation of action potential in the individual muscle fibers. Record of this action potential is called ______________
2. Off-set potential is _____________
3. Electrodes make a transfer from the __________ in the tissue to the electronic conduction which is necessary to make measurements.
4. Cells depolarize and action potential in generated as soon as a stimulus is applied.
5. The main design feature of pregelled disposable electrodes which helps to reduce the possibility of artefacts, drift and baseline wandering is _____________
6. Glass micro-capillaries are a type of micro electrode.
7. Phonocardiography is listening to __________
8. 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 __________
9. Generally what is the material of needle electrodes?
10. Electrode paste ____________
11. Which of the following metal is preferred for manufacturing micro electrodes?
12. According to the international 10/20 system to measure EEG, even number denotes which side of the brain?
13. _______________ instrument is used to hold patients head and guide the placement of electrodes.
14. Which of the following is not preferred for electrode making?
15. Metallic micro electrodes have impedance ________ compared to conventional electrodes?
16. Letter F in the EEG electrode placement system denotes?
17. In voluntary contraction of the skeletal muscles, the muscle potential ranges from ________
18. Do metallic micro electrodes exist.
19. 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?
20. Which of the following is a preferred electrode for measuring EMG?
21. EKG stands for _________________
22. Normal EEG frequency range is _______
23. What is the frequency range of ECG?
24. Electrooculography (EOG/E.O.G.) is a technique for measuring what?
25. Impedance pneumography is a commonly-used technique to monitor a person’s _______

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