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Tinnitus may be caused by increased neural activity in the auditory brainstem, where the brain processes sounds, causing some auditory nerve cells to become overexcited. The basis of this theory is that many with tinnitus also have hearing loss .
Though the pathophysiology of tinnitus is not known, noise exposure can be a contributing factor, therefore tinnitus can be associated with hearing loss, generated by the cochlea and central nervous system (CNS). High frequency hearing loss causes a high pitched tinnitus and low frequency hearing loss causes a roaring tinnitus. [19] Noise ...
Tinnitus can occur when damage to the cochlea creates a greater reduction of inhibition than excitation, allowing neurons to become aware of sound without sound actually reaching the ear. [24] If certain sound frequencies that contribute to inhibition more than excitation are produced, tinnitus can be suppressed. [ 24 ]
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There can be damage either to the ear, whether the external or middle ear, to the cochlea, or to the brain centers that process the aural information conveyed by the ears. Damage to the middle ear may include fracture and discontinuity of the ossicular chain. [79] [80] Damage to the inner ear (cochlea) may be caused by temporal bone fracture ...
The psychological basis for TRT is the hypothesis that the brain can change how it processes auditory stimuli. TRT is imputed to work by interfering with the neural activity causing the tinnitus at its source, in order to prevent it from spreading to other parts of the nervous systems such as the limbic and autonomic nervous systems. [2]
Hearing is lost gradually as the hair cells in the Corti stiffen and die. [10] Changes in the inner ear, middle ear, and complex changes along the nerve pathways from the ear to the brain can also affect hearing. Long-term exposure to noise and some medical conditions can also play a role.
As Alzheimer’s disease is the most common form of dementia — affecting an estimated 6.7 million Americans — it’s not surprising that people who experience memory loss may suspect AD.. In ...
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