Decreased Resting Perfusion in Precuneus and Posterior Cingulate Cortex Predicts Tinnitus Severity

Discussion in 'Research News' started by PortugalTheMan, Oct 24, 2021.

    1. PortugalTheMan
      Shocked

      PortugalTheMan Member

      Location:
      Portugal
      Tinnitus Since:
      01/2021
      Cause of Tinnitus:
      Anxiety / Maybe years listening to music on headphones
      Highlights

      • Global cerebral blood flow is reduced in tinnitus.
      • Tinnitus severity is negatively correlated with cerebral blood flow globally.

      • Tinnitus severity is negatively correlated with cerebral blood flow in the precuneus and posterior cingulate cortex.

      • Hearing loss predicted reduced cerebral blood flow in the precuneus in participants without tinnitus.

      • The presence or absence of hearing loss did not affect the correlation between tinnitus severity and cerebral blood flow.

      Study source
      https://www.sciencedirect.com/science/article/pii/S2665945X21000061

      Tinnitus, blood flow and the brain
       
      • Informative Informative x 3
    2. AUTHOR
      AUTHOR
      PortugalTheMan
      Shocked

      PortugalTheMan Member

      Location:
      Portugal
      Tinnitus Since:
      01/2021
      Cause of Tinnitus:
      Anxiety / Maybe years listening to music on headphones
      I don't see how tinnitus can change the blood flow in the brain.

      I think this lack of blood flow to certain parts of the brain is what causes tinnitus.

      At least it's the most logical reason.

      Let's wait for more studies. This study gave a new point of view to tinnitus.
       
    3. tommyd87

      tommyd87 Member

      Tinnitus Since:
      1999
      Cause of Tinnitus:
      tmj music
      I don't get how blood flow can be related to tinnitus at all.
       
    4. AUTHOR
      AUTHOR
      PortugalTheMan
      Shocked

      PortugalTheMan Member

      Location:
      Portugal
      Tinnitus Since:
      01/2021
      Cause of Tinnitus:
      Anxiety / Maybe years listening to music on headphones
      The comparison they made using MRI proved that the lower the blood flow, the more severe the tinnitus.
       
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    5. OptimusPrimed
      Spaced

      OptimusPrimed Member Benefactor

      Tinnitus Since:
      10/2007
      Cause of Tinnitus:
      Acoustic trauma
      Skeptical of this study. She says in the video that you are only aware of it when resting. No lady, I can hear mine 24/7 in noisy environments and quiet environments. Mine is noise-derived. It started after an initial acoustic trauma.

      Maybe the brain reduces flow to areas that once received or encoded information from the ear. Trying to maintain efficiency. These are the tinnitus associated areas. Who knows.
       
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    6. tommyd87

      tommyd87 Member

      Tinnitus Since:
      1999
      Cause of Tinnitus:
      tmj music
      I get this study now, however it seems on face value that it is only referring to a specific subset of tinnitus and not all kinds of tinnitus. Thus this makes things much clearer.
       
    7. Piney

      Piney Member

      Tinnitus Since:
      March 2018
      Cause of Tinnitus:
      Shingles virus
      After exercise (increased blood flow) my tinnitus is worse. After coffee (decreased blood flow) my tinnitus is worse for hours. Not sure I believe any of this, but if they have an answer, more power to them.
       
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    8. AUTHOR
      AUTHOR
      PortugalTheMan
      Shocked

      PortugalTheMan Member

      Location:
      Portugal
      Tinnitus Since:
      01/2021
      Cause of Tinnitus:
      Anxiety / Maybe years listening to music on headphones
      And what was the subtype of tinnitus they studied? I can't find it anywhere. But from what I understand it's a derived subtype of hearing loss.
       
    9. Frédéric

      Frédéric Member Podcast Patron Benefactor Advocate

      Location:
      Marseille, France
      Tinnitus Since:
      11/19/2012
      Cause of Tinnitus:
      acoustic trauma
      Same here after exercise. Coffee has no effect.
       
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      • Agree Agree x 1
    10. Clerkp

      Clerkp Member

      Tinnitus Since:
      2000
      Cause of Tinnitus:
      Loud Music
      Same.
       
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