Introduction and Definition The Summating Potential (SP) is a critical electrophysiological measurement in auditory science, representing a sustained, slowly changing electric potential generated within the cochlea in response to acoustic stimulation. Unlike the rapidly oscillating Cochlear Microphonic (CM) or the transient Auditory Nerve Action Potential (AP), the SP is fundamentally a direct current (DC) shift […]
Introduction to Electrocochleography (ECOCHG) The acronym ECOCHG, commonly abbreviated as ECoG, stands for Electrocochleography, a highly specialized and objective electrophysiological test utilized extensively within the fields of audiology and otology. This technique is designed to assess the functional status of the inner ear, specifically the cochlea and the auditory nerve up to its proximal segment, […]
Introduction to Electrophysiologic Audiometry (EPA) Electrophysiologic Audiometry (EPA) constitutes a comprehensive class of objective procedures utilized globally to measure the function and integrity of the auditory pathway, spanning from the peripheral cochlea to the central auditory cortex. Unlike traditional behavioral audiometry, which relies heavily on patient cooperation and subjective responses to sound stimuli, EPA methodologies […]
Electrocochleography (ECochG) The Core Definition of Electrocochleography (ECochG) Electrocochleography (ECochG) is a specialized electrophysiological test utilized in the field of audiology to objectively measure the electrical potentials generated by the inner ear, specifically the cochlea and the auditory nerve, in direct response to sound stimulation. This sophisticated diagnostic tool provides crucial insights into the functional […]