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Tonotopic Mapping in Physiology

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Questions and Answers

What guides the pre-natal establishment of tonotopic organization in the cochlea?

Activation of the auditory nerve cells

Synaptic reorganization (correct)

Changes in the basilar membrane width

Structural changes in the hair cells

Why does the apical end of the basilar membrane respond best to low-frequency sounds?

Due to its narrow and stiff structure

Because it is the location of the auditory nerve cells

Because of its proximity to the oval window

As a result of maximal vibration when exposed to low frequencies (correct)

What creates tonotopy in the cochlea?

The tectorial membrane above the basilar membrane

The presence of hair cells

The gradient of frequency response along the basilar membrane (correct)

The activation of synaptic connections

Which part of the cochlea responds best to high frequencies?

Hair cells located at the basal end Signup and view all the answers

How are hair cells in the cochlea activated?

By shearing force due to basilar membrane vibration Signup and view all the answers

What is tonotopy in physiology?

The processing of sounds of different frequencies in the brain Signup and view all the answers

Where does tonotopy originate in the auditory system?

Cochlea Signup and view all the answers

What characteristic of the basilar membrane allows nerves to encode frequency tonotopically?

Varying thickness and width along its length Signup and view all the answers

How is tonotopic mapping related to retinotopy in the brain?

Both involve organizing sensory information based on spatial locations Signup and view all the answers

What is the role of the vestibulocochlear nerve in tonotopy?

Carrying tonotopy information to the primary auditory cortex Signup and view all the answers