Auditory non-invasive detection method based on composite nerve action potentials

Abstract

The invention discloses an auditory non-invasive detection method based on composite nerve action potentials. The method comprises the following steps that a recording electrode is arranged at the lower rear quadrant of a human ear tympanic membrane and close to a tympanic ring, a stimulus sound is sent to an ear of a subject and a stimulus intensity threshold value capable of inducing a compositenerve action potential under the stimulation of each stimulation sound frequency in the test frequency range is extracted from a voltage signal near the tympanic membrane of the subject, a compositenerve action potential threshold curve is drawn to judge whether the hearing intensity sensitivity of the subject is normal, the stimulus sound and a suppression sound are sent to the ear of the subject, suppression sound intensity in the suppression sound frequency range is extracted from the voltage signal near the tympanic membrane of the subject, wherein the suppression sound intensity meets suppression rules at each suppression frequency; a composite nerve action potential tuning curve is drawn to judge whether the hearing frequency sensitivity of the subject is normal; the method realizes the hearing function detection of human ears in a non-invasive manner, and simultaneously realizes the comprehensive detection of a composite nerve action potential threshold curve and a composite nerve action potential tuning curve.

Description

technical field [0001] The invention relates to the technical field of auditory noninvasive detection, in particular to an auditory noninvasive detection method based on compound nerve action potentials. Background technique [0002] The compound nerve action potential is a response of the cochlea to sound stimulation. It is a compound nerve electrical signal generated by the auditory nerve cells in the cochlea. Its function is to transmit sound information to the center. It is generally believed that it is composed of different The potential response of auditory nerve fibers is a compound potential generated by synchronous superposition, and the compound nerve action potential can be recorded near the round window of the cochlea. The compound nerve action potential tuning curve reflects the function of cochlear inner hair cells and cochlear afferent nerves. It is an objective method to directly measure the frequency selection characteristics of the auditory nerve. Its resea...

AI Technical Summary

Problems solved by technology

However, the currently used compound nerve action potential tuning curve detection method needs to place the electrodes at the round window, which is an invasive method and cannot be applied to the routine detection of the human ear.

[0003] U.S. Patent US006640121B1 discloses an ear probe for cochlear nerve detection, which includes a fiber laser Doppler flowmeter probe for measuring blood flow and velocity in cochlear vessels, a cochlear electrode for measuring compound nerve action potentials, and a wrapped fiber laser The pointed cap of the Doppler blood flow meter probe, etc.; however, this patent focuses on the design of the ear probe, with the purpose of reducing the occurrence of hearing loss in patients during the operation. Although it involves the compound nerve action potential, it does not involve the compound Detection of neural action potential tuning curves, and the use of ear probes cannot achieve non-invasive results

[0004] Chinese patent CN102871797B discloses an animal auditory measurement system and method based on light array laser-induced hearing. The animal auditory measurement system based on

Images