What is the basil membrane?

Basilar of the membrane is a thin strip of tissue located in the shell cochle of the inner ear, directly below the corti organ. It monitors Kochle's outlines and acts as a separator between two liquids filled with tubes known as Scala Media and Scala Tympani, in addition to providing a base for sensory receptors known as hair cells or stereocilia. For ground vertebrates, the basic membrane is an essential part of the auditory system. Kochlea is shaped as a curled shell and is composed of channels filled with liquid, which help transform the sound waves transmitted by small bones of the middle ear into electrical pulses that the brain can interpret. The unique properties of the basilar membrane give him a key role in this sensory process.

The membrane monitors the curvature of Kochle and gradually becomes wider and less stiff, increasing from Base of Cochle. It is covered with thousands of outer and inner hair cells-a 16 000-20 000 in people-on-fluctuating sound waves. Sound waves afterThey turn it into electrical pulses and sent to the auditory areas of the brain for processing.

"The theory of the place" of the perception of the height of the tone suggests that the basic membrane is necessary in the ability to distinguish tones. The theory of the place states that different sound frequencies will vibrate different places on the basillar membrane and that each place along the membrane responds to a significant small frequency range. Higher frequency sounds vibrate the membrane near its base, where the membrane is most stiff and narrow, and excites hair cells of only this particular area. Lower frequency sounds vibrate the membrane further upwards, where it is less rigid and wider.

According to the place theory, people recognize playgrounds based on the area of ​​the basil membrane that is stimulated. The perception of the human course is, of course, more complicated than this. It is assumed that a certain "focus" of perception occurs at some point in the sensory process.

damage to the basilic itselfRinse membranes can lead to nervous deafness, which may be caused by disease or injury. Hearing loss may also be caused by damage to the hair cells of the inner ear due to long -term exposure to loud noise. In this case, if the individual is exposed to a loud noise of a specific frequency, hair cells may only damage on one area of ​​the basilar membrane.