What is Travelling wave in cochlea?
The traveling-wave theory of cochlear mechanics states that the fundamental cochlear response to acoustic stimuli consists of a displacement wave which propagates along the basilar membrane from base to apex [see reviews in ref.
What motion along the basilar membrane does?
The movement of the basilar membrane causes hair cell stereocilia movement. The hair cells are attached to the basilar membrane, and with the moving of the basilar membrane, the tectorial membrane and the hair cells are also moving, with the stereocilia bending with the relative motion of the tectorial membrane.
How does the basilar membrane respond to a sound wave?
When sound waves produce fluid waves inside the cochlea, the basilar membrane flexes, bending the stereocilia that attach to the tectorial membrane.
What is the definition of basilar membrane?
Definition of basilar membrane : a membrane extending from the bony shelf of the cochlea to the outer wall and supporting the organ of Corti.
What is the equation of a Travelling wave?
The equation of a travelling wave is y = 60 cos(1800 t – 6x) where y is in microns, t in seconds and x in metres. The ratio of maximum particle velocity to velocity of wave propagation is.
Who discovered Travelling waves?
von Bekesy was the first to directly observe the motion of the basilar membrane. He received the Nobel prize for his work in this area. Von Bekesy noted that the motion of the basilar membrane was in the form of a traveling wave, like the one that occurs when you flick a rope.
Why is the basilar membrane important?
The basilar membrane is an important component of the inner ear and is located inside the cochlea, which is moved by sound waves that fall on the ear. This delicate structure is critical for our sense of hearing.
How does the frequency of sound waves determine the movement of the basilar membrane?
Which of the following explains how the frequency of sound waves determines the movement of the basilar membrane? Higher-frequency waves move the region of the basilar membrane that is close to the base of the cochlea, whereas lower-frequency waves move the region that is near the tip of the cochlea.
How does the basilar membrane respond to different frequencies?
As a consequence of the mechanical properties of the organ of Corti, complex sounds are decomposed into a spectral series of signals distributed along the cochlear partition. At low sound pressure levels the basilar membrane responds most vigorously to low frequencies at its apex and to high frequencies at the base.
What effect does fluid movement in the cochlear have on the basilar membrane?
The basilar membrane separates the scala tympani from the scala media. When waves flow through the fluid in the cochlea, they create small ripples that travel down the basilar membrane itself (to visualize these ripples imagine the basilar membrane as a rug someone is shaking out).
What is meant by travelling wave?
Definition of traveling wave : a wave in which the particles of the medium move progressively in the direction of the wave propagation with such a gradation of speeds that the faster overtake the slower and are themselves in turn overtaken — compare standing wave.
What are called Travelling waves?
A wave can be described as a disturbance in a medium that travels transferring momentum and energy without any net motion of the medium. A wave in which the positions of maximum and minimum amplitude travel through the medium is known as a travelling wave.
https://www.youtube.com/watch?v=vhizzJApNV0