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Physiology: Tonotopy in the Auditory System

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Physiology: Tonotopy in the Auditory System

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Questions and Answers

What is tonotopy?

The processing of sounds in the brain based on their duration

The spatial organization of sounds in the ear canal

The spatial arrangement of where sounds of different frequencies are processed in the brain (correct)

The processing of sounds in the brain based on their loudness

Where does tonotopy in the auditory system begin?

Vestibulocochlear nerve

Organ of Corti (correct)

Basilar membrane

Primary auditory cortex

What are tonotopic maps a particular case of?

Classical conditioning

Habituation

Topographic organization (correct)

Neuroplasticity

How do nerves encode frequency tonotopically?

By variations in thickness and width along the length of the membrane Signup and view all the answers

What adds significant amounts of information encoded in the signal strength of each ganglion in the auditory system?

Superior olivary complex Signup and view all the answers

What is the role of Sonic Hedgehog in establishing tonotopic organization during early development?

Emanating from the notochord and floor plate Signup and view all the answers

How does the cochlea encode pitch based on frequency?

By stimulating neurons at the base with high frequency sounds Signup and view all the answers

What contributes to cochlear tonotopy according to research?

Morphology of hair bundles Signup and view all the answers

In humans, how many tonotopic maps have been identified in the primary auditory cortex?

Six Signup and view all the answers

What is vital for the precise and specific organization of tonotopy in mammals?

Receptor guanylyl cyclase Npr2 Signup and view all the answers