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The cochlea is a portion of the inner ear that looks like a snail shell (cochlea is Greek for snail). [5] The cochlea receives sound in the form of vibrations, which cause the stereocilia to move. The stereocilia then convert these vibrations into nerve impulses which are taken up to the brain to be interpreted.
Coronal section of a human brain. BA41(red) and BA42(green) are auditory cortex. BA22(yellow) is Brodmann area 22, HF(blue) is hippocampal formation and pSTG is posterior part of superior temporal gyrus. The auditory cortex is the part of the temporal lobe that processes auditory information in humans and many other vertebrates.
The cochlea propagates these mechanical signals as waves in the fluid and membranes and then converts them to nerve impulses which are transmitted to the brain. [ 4 ] The vestibular system is the region of the inner ear where the semicircular canals converge, close to the cochlea.
The cochlea is the tri-chambered auditory detection portion of the ear, consisting of the scala media, the scala tympani, and the scala vestibuli. [9] Regarding mammals, placental and marsupial cochleae have similar cochlear responses to auditory stimulation as well as DC resting potentials. [12]
The cochlea has three fluid-filled sections (i.e. the scala media, scala tympani and scala vestibuli), and supports a fluid wave driven by pressure across the basilar membrane separating two of the sections. Strikingly, one section, called the cochlear duct or scala media, contains endolymph. The organ of Corti is located in this duct on the ...
It is responsible for receiving signals from the medial geniculate nucleus. Within the primary auditory cortex, the auditosensory cortex extends posteromedially over the gyrus. [ 2 ] Brodmann area 42 is an auditory core region bordered medially by Brodmann area 41 and laterally by Brodmann area 22. [ 2 ]
Mark, whom CNN agreed to identify using only his first name for privacy reasons, has an implant inside his brain that is translating his neural activity to commands on a computer.
The cochlea consists of three fluid-filled spaces: the vestibular duct, the cochlear duct, and the tympanic duct. [3] Hair cells responsible for transduction —changing mechanical changes into electrical stimuli are present in the organ of Corti in the cochlea.