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AUDITION

Acoustic device for detection of enemy warplanes.

Figure 1:Acoustic device for detection of enemy warplanes.[1]

Our second most studied sense is hearing. We know a lot less about this sense than we do about seeing, but we know a lot more about hearing than we do about all the other senses that we have not yey talked about.

You will also notice that there are several principles that we have learned when examining vision that will also apply to hearing. In fact, this will be a reoccurring theme and happen for the other senses as well.

We will proceed just like we did for the sense of seeing, and first talk about what exactly the physical stimuli are that evoke the perception of hearing. Then, we will examine the relevant sense organs. And just like in the case of vision (and as will be the case for the other senses we discuss), there will be a lot more to discuss about these peripheral mechanisms of sensation than what we can subsequently discuss about the neuronal mechanisms of the brain that we believe to support the auditory perception. And as we have done for visual perception, we will review the psychophysics and psychology of hearing as well. This will also touch on speech and music

ACOUSTICS

Sound

Vocalization

Anatomy of vocalization.[2]

PSYCHOLOGY

Psychophysics

Music

ANATOMY

Ear

Outer Ear

Middle Ear

Inner Ear

Cochlea

The cochlear is the retina of the ear.

ORGAN OF CORTI

Cross-section of the Organ of Corti.

Figure 3:Cross-section of the Organ of Corti.[3]

Auditory Nerve

BRAIN

Primary Auditory Pathway

Cochlear Nucleus

Inferior Olive

Superior Olive

Inferior Colliculus

Medial Geniculate Nucleus

Auditory Cortex

A1 / Core

Belt

Parabelt

Dorsal / Ventral Stream

Footnotes