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The ear canal amplifies sounds that are between 3 and 12 kHz. [1] The tympanic membrane , at the far end of the ear canal marks the beginning of the middle ear . Middle ear
The ear canal (external acoustic meatus, external auditory meatus, EAM) is a pathway running from the outer ear to the middle ear.The adult human ear canal extends from the auricle to the eardrum and is about 2.5 centimetres (1 in) in length and 0.7 centimetres (0.3 in) in diameter.
Cartilage conduction: Sound from a vibrator oscillates the aural cartilage, and the generated sound in an external auditory canal is transmitted via the ear drum, middle ear, and inner ear. In this case, the cartilage part of the external auditory canal plays the roles of a diaphragm of a loudspeaker.
Sound is the perceptual result of mechanical vibrations traveling through a medium such as air or water. Through the mechanisms of compression and rarefaction, sound waves travel through the air, bounce off the pinna and concha of the exterior ear, and enter the ear canal.
The Outer ear consists of the pinna or auricle (visible parts including ear lobes and concha), and the auditory meatus (the passageway for sound). The fundamental function of this part of the ear is to gather sound energy and deliver it to the eardrum. Resonances of the external ear selectively boost sound pressure with frequency in the range 2 ...
Hearing, or auditory perception, is the ability to perceive sounds through an organ, such as an ear, by detecting vibrations as periodic changes in the pressure of a surrounding medium. [1] The academic field concerned with hearing is auditory science .
[1]: 383 The trapezoid body is part of the auditory pathway . It is one of three distinct decussating second-order efferent fiber pathways of the cochlear nuclei (the other two being the dorsal acoustic striae , and intermediate acoustic striae ).
The non-primary auditory cortex receives inputs from the extralemniscal non-classical auditory pathway, which shows a diffuse frequency organization. [ 24 ] The tonotopic organization of the auditory cortex has been extensively examined and is therefore better understood compared to other areas of the auditory pathway. [ 24 ]