Many people are interested in Corti's body and its functions.Everyone should have at least a brief idea of it. Corti's organ is called the peripheral part of the hearing aid. It is in a webbed labyrinth. In the course of evolution, on the basis of the lateral line organs (namely, their structures), this part of the auditory analyzer developed.
It is located in the cochlear path, in whichis the perilymph, as well as the endolymph, and is a bone labyrinth, similar to a spiral. The upper part of the path is adjacent to the so-called vestibular staircase. It is referred to as the Rantern membrane. And the lower part, located near the tympanic staircase, consists of the main membrane, which is in contact with the bone spiral plate.
Corti's organ is located on the main membrane, itis formed by external, and also by internal hair and supporting cells. As an example, you can cite the pillars. Also here are the cells of Gensen, Claudius and Deiters. Of these, the organ of Corti is composed. Between them is a tunnel, along which the axons pass, located in a nervous spiral node. They rush to react to the audio signals of the hair cells. The latter, in turn, lie in the recesses created by the bodies of the supporting cells. On their surface, turned to the cover membrane, 30 to 60 non-long hairs are located. Supporting cells also carry a trophic function. How exactly? They send nutrients to the hair cells. The role of the organ of Corti is the transformation of the energy of sound vibrations into nervous excitement. For this, strictly speaking, it is needed. Here is what the corti's organ performs. Histology allows you to get acquainted with its structure.
The eardrum catches the soundvibration, which through the pits located in the middle ear, fall into liquid media - endolymph, as well as perilymph. Their movements contribute to the fact that the cover membrane of the Corti's organ is slightly removed from the hair cells. What happens as a result? First, the hairs are bent.
There is also a different opinion on this matter.According to him, the hairs of cells that capture sound signals are just sensitive antennas that are depolarized as a result of the impact of incoming waves. Endolymphatic acetylcholine plays a significant role here. Depolarization triggers a sequence of chemical transformations in hair cells, namely in their cytoplasm. Then a nervous impulse appears in the nerve endings that come into contact with them. Sound vibrations have different heights. For each of them, a separate part of the Corti's organ is intended. High frequencies provoke vibration in sections of the cochlea located closer to the base, and low ones at the top. This is due to hydrodynamic phenomena in the cochlea. Corti's organ, whose functions are now known to you, plays an important role throughout this process.
It turns out that the cochlea can be considered a mechanical determinant of the amplitude-frequency characteristic: by its action it resembles it. But on the microphone it is not very similar.
Thanks to the above features, the braincan immediately respond to certain sound signals, rather than implement the Fourier transform, resorting to the help of mathematics (by the way, for this he lacks computational capabilities) in order to sort the captured information by sources. It would be too difficult. It is easier to understand what a Corti body is than to imagine such a process.
To learn more about angulardirection of the signal source, attention should be paid to the polarization of the sound harmonics. This is an important condition. It turns out that the ear allows you to acquire information about the polarization. You can also learn about the amplitude of all harmonics of audio signals. In the case of low frequencies, the brain and ear, among other things, receive information relating to the phase of the harmonics, and therefore, it is possible to trace the direction of vibration. What do I need to do? Just calculate the phase difference between the left and right ear. Easy enough, is not it? Although, of course, it is easier to understand what the organ of Corti is.
Feature of additional audio compressioninformation allows you to significantly reduce the time to analyze the information that was received. The snail is twisted, and thanks to this, it becomes possible to shoot the spectrum while simultaneously combining the octaves.
Now you know what the organ of Corti is and what structure it has. Also, you are aware of the functions that it performs. All this is very important and useful to know.
