| Basilar membrane. | Latin membrana basilaris ductus cochlearis | MeSH D001489 | Anatomical terminology |
|---|
How does the basilar membrane respond to pitch?
A
low frequency tone causes slow waves of motion
in the basilar membrane and that might give rise to low firing rates in the auditory nerve. A high frequency tone causes fast waves of motion in the basilar membrane and that might give rise to high firing rates.
What do different parts of the basilar membrane respond to?
| Basilar membrane. | Latin membrana basilaris ductus cochlearis | MeSH D001489 | Anatomical terminology |
|---|
Does the basilar membrane respond to amplitude?
When very high-frequency sound waves reach the ear, only the region nearest the cochlear base vibrates. As the frequency of the sound is lowered, the place of
maximal amplitude of vibration shifts
toward the cochlear apex. Because of this resonance gradient, the basilar membrane is said to be “tonotopically” organized.
What is the basilar membrane responsible for?
the basilar membrane is found in the cochlea; it forms the base of the organ of Corti, which contains
sensory receptors for hearing
. Movement of the basilar membrane in response to sound waves causes the depolarization of hair cells in the organ of Corti.
What causes the basilar membrane to move?
In human hearing, sound waves enter the outer ear and travel through the external auditory canal.
The motion of the stapes against the oval window sets up waves in the fluids of the cochlea
, causing the basilar membrane to vibrate. …
What is the major role of the basilar membrane quizlet?
What is the major role of the basilar membrane? The basilar membrane
supports the spiral organ, and vibrations are transmitted through the basilar membrane to the hair cells of the spiral
organ.
Where is the basilar membrane most sensitive to the vibrations of low frequency sound waves quizlet?
Where is the basal membrane most sensitive to the vibrations of low-frequency sound waves?
at the apex, farthest from the oval window
.
What does basilar membrane mean in psychology?
a fibrous membrane within the cochlea that supports the organ of Corti
. In response to sound, the basilar membrane vibrates; this leads to stimulation of the hair cells—the auditory receptors within the organ of Corti.
Why can’t the frequency of a sound be detected simply by observing the point where the basilar membrane is most deformed?
Why is it impossible to predict the frequency of a sound wave simply by looking at which portion of the basilar membrane is the most deformed?
Frequency must be coded in some way other than the site of maximal activation in tonotopic maps
for two reasons.
What is on top of the basilar membrane?
Resting on top of the basilar membrane, and running the length of the cochlear duct within the scala media, is
the sensory organ of the cochlea, the organ of Corti
(Fig. 5). The organ of Corti contains two types of sensory hair cells, the inner and outer hair cells, as well as a number of supporting cell types.
What is the relationship between the basilar membrane and Tonotopic organization?
What is the relationship between the basilar membrane and tonotopic organization?
the basilar membrane is organized tonotopically
– meaning each segment has a frequency of greatest sensitivity. essentially the 4 main tonotopic areas move from closest to the oval window (high frequency) to farthest away (low frequency).
What is the difference between the basilar membrane and the tectorial membrane?
The key difference between basilar and tectorial membrane is that
basilar membrane is the membrane that forms the floor of the cochlear duct
, on which the cochlear hair cells lie embedded, while tectorial membrane is the fibrous sheet overlying the apical surface of the cochlear hair cells.
How many stereocilia are on the basilar membrane?
There are two types of sensory hair cells that reside on the basilar membrane; a single row of inner hair cells and three rows of outer hair cells. Both inner and outer hair cells contain
up to 150 stereocilia
protruding from their apical surface and are arranged in rows based on their height.
What part of the brain does the basilar artery supply?
The basilar artery (BA) serves as the main conduit for blood flow through the posterior circulation. It directly supplies
the brainstem and cerebellum
and provides distal blood flow to the thalami and medial temporal and parietal lobes.
Does the basilar membrane have hair cells?
The auditory receptor cells, called hair cells,
lie embedded within the basilar membrane
. This membrane divides the spiraled cochlea into upper and lower chambers. Movement of the fluid within the cochlea causes stimulation of the hair cells.
