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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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Heart Sounds

Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...
The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

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El tinnitus es un acúfeno.

David Baguley1, Don McFerran, Deborah Hall

  • 1Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK; Anglia Ruskin University, Cambridge, UK.

Lancet (London, England)
|July 6, 2013
PubMed
Resumen
Este resumen es generado por máquina.

El tinnitus, un síntoma común pero debilitante, carece de tratamientos efectivos con medicamentos. La gestión actual se centra en los audífonos, la terapia de sonido y el asesoramiento, con la terapia cognitivo-conductual (TCC) que muestra promesa.

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Área de la Ciencia:

  • La otorrinolaringología otorrinolaringología.
  • Neurología Neurología.
  • La psiquiatría es la psiquiatría.

Sus antecedentes:

  • El tinnitus es un síntoma prevalente y a menudo debilitante.
  • Los factores de riesgo identificados incluyen pérdida auditiva, medicamentos ototóxicos, lesiones en la cabeza y depresión.
  • El diagnóstico diferencial debe considerar la enfermedad otológica, la ansiedad y la depresión.

Objetivo del estudio:

  • Revisar la comprensión actual del tinnitus, sus factores de riesgo y los tratamientos disponibles.
  • Para resaltar las limitaciones en las opciones terapéuticas actuales y las direcciones de investigación.

Principales métodos:

  • Revisión de la literatura sobre los mecanismos del tinnitus, los factores de riesgo y las modalidades de tratamiento.
  • Análisis de la base de evidencia para las intervenciones existentes.

Principales resultados:

  • Actualmente no se dispone de tratamientos farmacológicos universalmente efectivos para el tinnitus.
  • Los audífonos para la pérdida auditiva, la terapia de sonido y el asesoramiento son tratamientos establecidos.
  • La terapia cognitivo-conductual (TCC) muestra potencial, pero tiene una disponibilidad limitada, especialmente la TCC específica para el tinnitus en el Reino Unido.

Conclusiones:

  • La evidencia más sólida apoya una combinación de terapia de sonido y asesoramiento basado en TCC.
  • Los ensayos clínicos se enfrentan a desafíos debido a la naturaleza diversa de los pacientes con tinnitus.
  • Se necesita más investigación para desarrollar tratamientos efectivos para el tinnitus.