Where on the basilar membrane are low frequencies activating hair cells?

Where on the basilar membrane are low frequencies activating hair cells?

apex
High-frequency sounds localize near the base of the cochlea, while low-frequency sounds localize near the apex.

What region of the cochlea do low frequencies stimulate?

As explained in Tonotopic Organization, high frequency sounds stimulate the base of the cochlea, whereas low frequency sounds stimulate the apex.

Where are low frequency sounds sensed?

ear
The ear is the primary organ for sensing low sound, but at higher intensities it is possible to feel infrasound vibrations in various parts of the body. The study of such sound waves is sometimes referred to as infrasonics, covering sounds beneath 20 Hz down to 0.1 Hz (and rarely to 0.001 Hz).

Where are the hair cells that respond to different frequencies of sound?

Hair cells are spread across a flat surface called the basilar membrane, which is rolled like a carpet and tucked into a snail shell-shaped structure in the inner ear called the cochlea. Each of our roughly 16,000 hair cells is dedicated to a narrow frequency range.

Where are hair cells located in the basilar membrane?

cochlea
In mammals, the auditory hair cells are located within the spiral organ of Corti on the thin basilar membrane in the cochlea of the inner ear.

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.

How are hair cells stimulated?

The hair cells located in the organ of Corti transduce mechanical sound vibrations into nerve impulses. They are stimulated when the basilar membrane, on which the organ of Corti rests, vibrates.

What does the basilar membrane do?

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.

Where are hair cells?

In mammals, the auditory hair cells are located within the spiral organ of Corti on the thin basilar membrane in the cochlea of the inner ear. They derive their name from the tufts of stereocilia called hair bundles that protrude from the apical surface of the cell into the fluid-filled cochlear duct.

Where are hair cells that are stimulated by sound waves found quizlet?

The high frequency hair cells are located at the stapes end, closer the middle ear. o They receive the strongest stimulation.

How do the sound waves interact with the basilar membrane?

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. …

How does low frequency sound affect the basilar membrane?

We show that low-frequency sound moves a small portion of the basilar membrane, and that the motion declines in an exponential manner across the basilar membrane. Hence, the response of the hearing organ to speech-frequency sounds is different from the one evident in high-frequency cochlear regions.

How does sound affect hair cells in the cochlear spiral?

Because of systematic variations in basilar membrane properties, high-frequency sound stimulates sensory cells near the base of the cochlear spiral, whereas the low sound frequencies that are most important for speech and music perception cause maximal stimulation of hair cells near the apex of the spiral.

How does the brain respond to low frequency sound?

To perceive speech, the brain relies on inputs from sensory cells located near the top of the spiral-shaped cochlea. This low-frequency region of the inner ear is anatomically difficult to access, and it has not previously been possible to study its mechanical response to sound in intact preparations.

Which is part of the basilar membrane is deformed?

When sound pressure is transmitted to the fluids of the inner ear by the stapes, the pressure wave deforms the basilar membrane in an area that is specific to the frequency of the vibration. In this way, higher frequencies cause movement in the base of the cochlea , and deeper frequencies work at the apex.