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?

<p>Hair cells located at the basal end (B)</p> Signup and view all the answers

How are hair cells in the cochlea activated?

<p>By shearing force due to basilar membrane vibration (A)</p> Signup and view all the answers

What is tonotopy in physiology?

<p>The processing of sounds of different frequencies in the brain (A)</p> Signup and view all the answers

Where does tonotopy originate in the auditory system?

<p>Cochlea (C)</p> Signup and view all the answers

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

<p>Varying thickness and width along its length (B)</p> Signup and view all the answers

How is tonotopic mapping related to retinotopy in the brain?

<p>Both involve organizing sensory information based on spatial locations (C)</p> Signup and view all the answers

What is the role of the vestibulocochlear nerve in tonotopy?

<p>Carrying tonotopy information to the primary auditory cortex (D)</p> Signup and view all the answers

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