Tinnitus emissions (SOAEs), which are faint high-frequency tones that are produced in the inner ear and can be measured in the ear canal with a sensitive microphone, may also cause tinnitus. About 8% of those with SOAEs and tinnitus have SOAE-linked tinnitus, while the percentage of all cases of tinnitus caused by SOAEs is estimated at about 4%. Some people experience a sound that beats in time with their pulse, known as "pulsatile tinnitus" or "vascular tinnitus". Pulsatile tinnitus is usually objective in nature, resulting from altered blood flow, increased blood turbulence near the ear, such as from atherosclerosis or venous
American Tinnitus Association to proficiently treat and diagnose tinnitus patients. Jack Vernon, Ph.D. joined Dr. Charles Unice to form the ATA in 1971. The two met while Dr. Vernon was conducting clinical research at the Oregon Health Sciences University in Portland, OR and began treating Dr. Unice for his tinnitus condition. With aim to raise money for tinnitus funding, the ATA was born. Portland, OR still serves as base for the organization. The ATA started in a small studio sized office and was staffed by Portland area volunteers. Since then the ATA has become the largest group of individual contributors that awards grant