GATE 2022 BM – Question 30
Which statements about biomedical electrical measurements are true?
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Show answer and explanation
Correct answer: (A) ENG measures electrical activity of peripheral neurons; (C) EEG gamma waves have higher frequency than beta, delta and theta waves
Explanation
Electroneurography records peripheral nerve electrical activity, A. Gamma EEG activity is higher in frequency than the named bands, C. Retinal light response is measured by ERG rather than EOG, which mainly tracks the corneo-retinal standing potential/eye motion. P represents atrial depolarization, not ventricular repolarization. Thus A,C.