Question

This technique involves measuring the optical transmittance of the ear at how many wavelengths?

(a) 12

(b) 6

(c) 8

(d) 10

The question was posed to me by my college director while I was bunking the class.

I want to ask this question from Vectorcardiography (VCG) in division Biomedical Recorders of Biomedical Instrumentation

Answer 1

Correct answer is (c) 8

To explain I would say: In brief, the technique involves measuring the optical transmittance of the ear at 8 wavelengths in the 650 to 1050 nm range. A 2.5 m long flexible fibre ear probe connects the patient to the instrument.