Measurement of Heart Rate MCQ

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• What is the typical frequency range of standard EEG machines?
  ক

  0.025 to 0.05 Hz

  খ

  0.05 to 0.1 Hz

  গ

  0.1 to 70 Hz

  ঘ

  70 to 140 Hz
• EEG machines have notch filter sharply tuned at _______ Hz as to eliminate mains frequency interference.
  ক

  10

  খ

  30

  গ

  50

  ঘ

  70
• Preamplifiers used in electroencephalograph have high gain and low noise characteristics.
  ক

  True

  খ

  False
• What is the typical value of the calibration signal?
  ক

  10 uV/cm

  খ

  30 uV/cm

  গ

  50 uV/cm

  ঘ

  70 uV/cm
• Where is the reference electrode placed?
  ক

  nasal

  খ

  cervical

  গ

  forehead

  ঘ

  facial
• A pattern of electrodes on the head and the channels they are connected to are __________
  ক

  Amplifiers

  খ

  Oscilloscope

  গ

  Montage

  ঘ

  Wires
• EEG signals picked up by surface electrodes are usually small as compared to ECG.
  ক

  True

  খ

  False
• How is bipolar recording done?
  ক

  Omni channel EEG

  খ

  Multi channel EEG

  গ

  Uni Channel EEG

  ঘ

  Non Channel EEG
• Voltage difference between an active electrode on the scalp with respect to reference electrode at ear lobe or any other part of body is known as ___________ recording.
  ক

  Monopolar

  খ

  Bipolar

  গ

  Unipolar

  ঘ

  Nonpolar
• What are generally designed to have a very high value of input impedance to take care of high electrode impedance?
  ক

  Montages

  খ

  Electrodes

  গ

  Preamplifiers

  ঘ

  Filters
• Whose electrodes give high skin impedance as compared to ECG?
  ক

  VCG

  খ

  PCG

  গ

  EMG

  ঘ

  EEG
• Which of the following is material is used to improve electrical contact?
  ক

  Silver Tungsten

  খ

  Electrode jelly

  গ

  Silver Graphite

  ঘ

  Copper Tungsten
• _______ is the superimposed wave of neuron potentials operating in a non-synchrronized manner in a physical sense.
  ক

  VCG

  খ

  ECG

  গ

  EEG

  ঘ

  PCG
• EEG electrodes are larger in size than ECG electrodes.
  ক

  True

  খ

  False
• Which of the following instrument is used for recording the electrical activity of the brain?
  ক

  ECG

  খ

  EMG

  গ

  PCG

  ঘ

  EEG