An Integrative Model Accounting for the Symptom Cluster Triggered After an Acoustic Shock

Discussion in 'Research News' started by lymebite, Sep 30, 2018.

    1. lymebite
      Vegged out

      lymebite Member Podcast Patron Benefactor

      Location:
      United States
      Tinnitus Since:
      2013
      Cause of Tinnitus:
      Unknown
      A new research paper on acoustic shock and hyperacusis:

      An Integrative Model Accounting for the Symptom Cluster Triggered After an Acoustic Shock

      http://journals.sagepub.com/doi/full/10.1177/2331216518801725

      Abstract

      First Published September 25, 2018

      Acoustic shocks and traumas sometimes result in a cluster of debilitating symptoms, including tinnitus, hyperacusis, ear fullness and tension, dizziness, and pain in and outside the ear. The mechanisms underlying this large variety of symptoms remain elusive. In this article, we elaborate on the hypothesis that the tensor tympani muscle (TTM), the trigeminal nerve (TGN), and the trigeminal cervical complex (TCC) play a central role in generating these symptoms. We argue that TTM overuse (due to the acoustic shock), TTM overload (due to muscle tension), and ultimately, TTM injury (due to hypoxia and ‘‘energy crisis’’) lead to inflammation, thereby activating the TGN, TCC, and cortex. The TCC is a crossroad structure integrating sensory inputs coming from the head–neck complex (including the middle ear) and projecting back to it. The multimodal integration of the TCC may then account for referred pain outside the ear when the middle ear is inflamed and activates the TGN. We believe that our model proposes a synthetic and explanatory framework to explain the phenomena occurring postacoustic shock and potentially also after other nonauditory causes. Indeed, due to the bidirectional properties of the TCC, musculoskeletal disorders in the region of the head–neck complex, including neck injury due to whiplash or temporomandibular disorders, may impact the middle ear, thereby leading to otic symptoms. This previously unavailable model type is experimentally testable and must be taken as a starting point for identifying the mechanisms responsible for this particular subtype of tinnitus and its associated symptoms.
       
      • Informative Informative x 5
      • Like Like x 3
      • Winner Winner x 1
    2. Contrast
      No Mood

      Contrast Member Benefactor Hall of Fame

      Location:
      in a better place
      Tinnitus Since:
      late 2017
      Cause of Tinnitus:
      noise injury
      upload_2018-9-30_17-51-37.png

      ....
      upload_2018-9-30_17-53-30.png

      If I understand correctly TMD and hearing loss both share a connection having to due with the trigeminal nerve
       
      • Good Question Good Question x 2
      • Like Like x 1
      • Agree Agree x 1
    3. 1000

      1000 Member

      Tinnitus Since:
      2017
      Cause of Tinnitus:
      Trauma
      I've had TMD for many years after a jaw surgery...but did not have any hearing issues that I could notice as they started out after the trauma. In some sense my trigeminal nerve was already affected and I was more sensitive than a regular person... Wonder if a trigeminal nerve block injection could help or if it would just do more harm...
       
    4. 1000

      1000 Member

      Tinnitus Since:
      2017
      Cause of Tinnitus:
      Trauma
      @Contrast
      Do you have any symptoms from the TMJD?
       
    5. JohnAdams
      Festive

      JohnAdams Member Benefactor Hall of Fame

      Location:
      Vatican
      Tinnitus Since:
      May 1st 2018
      Cause of Tinnitus:
      Aspirin Toxicity/Possibly Noise
      If FrequencyTX would come off with some of their data about if and how their treatment is affecting tinnitus then there would be a lot of light cast on this subject. As of now though everything is a big damn secret, which doesnt help the situation very much.
       
    6. JohnAdams
      Festive

      JohnAdams Member Benefactor Hall of Fame

      Location:
      Vatican
      Tinnitus Since:
      May 1st 2018
      Cause of Tinnitus:
      Aspirin Toxicity/Possibly Noise
      Is the hair cell the only part that cannot heal or regenerate?
       

Share This Page

Loading...