Search results
Results from the WOW.Com Content Network
The basilar membrane is a pseudo-resonant structure [1] that, like the strings on an instrument, varies in width and stiffness. But unlike the parallel strings of a guitar, the basilar membrane is not a discrete set of resonant structures, but a single structure with varying width, stiffness, mass, damping, and duct dimensions along its length.
Different regions of the basilar membrane in the organ of Corti, the sound-sensitive portion of the cochlea, vibrate at different sinusoidal frequencies due to variations in thickness and width along the length of the membrane. Nerves that transmit information from different regions of the basilar membrane therefore encode frequency tonotopically.
This attribute of the physiology of the basilar membrane can be illustrated in the form of a place–frequency map: [12] Simplified schematic of the basilar membrane, showing the change in characteristic frequency from base to apex. The basilar membrane supports the organ of Corti, which sits within the scala media. [4]
The basilar membrane is labeled "basilar fiber." The basilar membrane and the hair cells of the cochlea function as a sharply tuned frequency analyzer. [ 3 ] Sound is transmitted to the inner ear via vibration of the tympanic membrane , leading to movement of the middle ear bones (malleus, incus, and stapes).
Georg von Békésy (Hungarian: Békésy György, pronounced [ˈbeːkeːʃi ˈɟørɟ]; 3 June 1899 – 13 June 1972) was a Hungarian-American biophysicist. [1]By using strobe photography and silver flakes as a marker, he was able to observe that the basilar membrane moves like a surface wave when stimulated by sound.
Basilar membrane; Bruch's membrane; Descemet's membrane; Glomerular basement membrane; The glomerular basement membrane is a special case, consisting of a fusion of the podocyte and endothelial basal laminas, and lacking a lamina reticularis. Thus, it consists of an especially thick lamina densa, sandwiched on its inside and outside by layers ...
The hair bundle motor operates by deflecting hair bundles in the positive direction and providing positive feedback of the basilar membrane, increasing the movement of the basilar membrane which increases the response to a signal. Two mechanisms have been proposed for this motor: fast adaptation, or channel re-closure, and slow adaptation.
The stria vascularis is a rich bed of capillaries and secretory cells; Reissner's membrane is a thin membrane that separates endolymph from perilymph; and the basilar membrane is a mechanically somewhat stiff membrane, supporting the receptor organ for hearing, the organ of Corti, and determines the mechanical wave propagation properties of the ...