There appears to be a venous anomaly in my left cerebellum that needs to be investigated and may be the source of my pulsatile tinnitus. So, I started doing some research and the findings in these 2 papers were quite edifying to say the least,. It appears that the DCN may not be quite the culprit everyone first suspected it was.
Tinnitus and hyperacusis involve hyperactivity and enhanced connectivity in auditory-limbic-arousal-cerebellar network: 2015
https://elifesciences.org/articles/06576
The Cerebellum as a Novel Tinnitus Generator: 2013
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3711801/
Tinnitus and hyperacusis involve hyperactivity and enhanced connectivity in auditory-limbic-arousal-cerebellar network: 2015
https://elifesciences.org/articles/06576
The Cerebellum as a Novel Tinnitus Generator: 2013
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3711801/