Tinnitus treatment with aggregate spectrum acoustic signal...

Details Tinnitus treatment with aggregate spectrum acoustic signal... Tinnitus treatment with aggregate spectrum acoustic signal...

A - Human Necessities

61

F

A61F 11/00 (2006.01)

Patent

CA 2564252

Tinnitus (perception without concomitant acoustic stimulus in the environment) and hyperacusis (auditory hypersensitivity), are very prevalent in the general population and can impair dramatically the quality of life. Here, we present a neurophysiological model postulating that these "aberrant" perceptions are caused by the central changes induced by the decrease in afferent inputs related to a hearing loss. This model suggests that the compensation of the decrease in afferent inputs (related to hearing loss) could reverse the "maladaptive" central changes potentially causing tinnitus and/or hyperacusis. The present study challenged this hypothesis: subjects presenting tinnitus (and for some hyperacusis as well) were stimulated (few hours a day) over a period of 15 weeks with a stimulus designed to specifically stimulate the frequency range of hearing loss. The acoustic stimulation, called the "Aggregate Spectrum Acoustic Signal" (ASAS), is expected to restore uniform sensory inputs across audible frequencies. This ASAS stimulation decreases severity significantly.

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