title: A non-invasive Cochlear Microphonic measurement system.
abstract: The Cochlear Microphonic is one of the electrical potentials generated by the ear in response to audible stimuli. It is very difficult to measure the CM non-invasively because it has a very small magnitude (less than 1 μV). A high Common Mode Rejection Ratio (CMRR) and very large bandwidth (5 Hz-20 kHz) biomedical amplifier system is presented to measure the signal. The system also uses a driven right leg circuit to increase the CMRR.
authors: School of Engineering and Computer Science, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand.
authors: Asim
authors: A
authors: Masood
authors: Paul D
authors: PD
authors: Teal
authors: Christopher
authors: C
authors: Hollitt
mesh_terms: D000161:Acoustic Stimulation; D000162:Acoustics / Q000295:instrumentation*; D000669:Amplifiers, Electronic; D003051:Cochlea / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D006801:Humans