Which of the following instrument is used for recording the movements imparted to the body with each beat of the heart cycle?
(a) Apexcardiograph
(b) Ballistocardiograph
(c) Electro-oculograph
(d) Electro-retinograph
This question was posed to me in an interview.
My question is based upon Catheterization Laboratory Instrumentation topic in chapter Patient Monitoring System of Biomedical Instrumentation