The Longitudinal Distribution of the Cochlear Microphonic (CM) Potentials Inside the Scala Media of the Guinea Pig's Cochlea
Year: 1967
Type: article
Abstract: The cochlear microphonic (CM) potentials were recorded in each turn of the cochlea for sound stimuli between 3000 to 300 Hz, and the longitudinal distribution of the potentials were determined. For every frequency, the envelope of the CM was steeper on the side toward the base than that on the side toward the apex of the cochlea. The envelope of the CM for high frequencies had larger slopes than did the envelope for the low frequencies. This was true both on the proximal and distal sides of the maximum of the envelope. The magnitude of the slope is a linear function of the logarithm of the sound's frequency. The receptive fields of the cochlea for the sound stimuli used showed that at the level of the maximum sensitive points a given magnitude of CM (i.e., 1 mV) was obtained for all the frequencies with approximately the same sound-pressure level (i.e., 70 dB).
DOI: 10.1121/1.2143556
Authors: V. Honrubia, P. H. Ward
Institution: Vanderbilt University
Language: English
Subfield: Sensory Systems
Field: Neuroscience
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W1972666362