Hypersonic effect Hypersonic effect The hypersonic effect is a term coined to describe a phenomenon reported in a controversial scientific study by Tsutomu Oohashi et al., which claims that, although humans cannot consciously hear ultrasound (sounds at frequencies above approximately 20 kHz), the presence or absence of those frequencies has a measurable effect on their physiological and psychological reactions. Numerous other studies have contradicted the portion of the results relating to the subjective reaction to high-frequency audio, finding that people who have "good ears" listening to Super Audio CDs and high resolution DVD-Audio recordings on high fidelity systems capable of reproducing sounds
Diabetes mellitus and deafness hearing loss. This begins with a reduction in the perception of frequencies above approximately 5 kHz which progressively declines, over the years, to severe hearing loss at all frequencies. The diabetes that accompanies the hearing loss can be similar to Type 1 diabetes or Type 2 diabetes; however, Type 1-like diabetes is the more common form of the two. MIDD has also been associated with a number of other issues including kidney dysfunction, gastrointestinal problems, and cardiomyopathy. MIDD represents 1% of people who have diabetes. Over 85% of people that carry the mutation in mitochondrial DNA at position 3243 present