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Half-octave shift in mammalian hearing is an epiphenomenon of the cochlear amplifier

Sripriya Ramamoorthy1, Alfred L Nuttall

  • 1Oregon Hearing Research Center, Department of Otolaryngology, Oregon Health & Science University, Portland, Oregon, USA. ramamoor@ohsu.edu

Plos One
|October 11, 2012
PubMed

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Gain:
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