General Science · Scientific Instruments
Which instrument simultaneously records changes in physiological processes like heartbeat, blood pressure, and respiration, and is commonly used as a lie detector?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Sphygmomanometer
- 2Electrocardiograph
- 3Polygraph✓
- 4Seismograph
Correct answer
Polygraph
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