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Human mechanoreceptors, such as Pacinian corpuscles, can detect vibrations up to 1,000 Hz, frequencies between 30 Hz and 120 Hz are generally considered to have a calming and relaxing effect, which is why they are often used in therapeutic contexts.40 Hz specifically, has been widely studied in vibroacoustic therapy and other fields due to its ...
Frequency Specific Microcurrent (FSM) or frequency Specific Microcurrent Therapy (FSMT) is the practice of introducing a mild electrical current into an area of damaged soft tissue. Practitioners claim that the introduced current enhances the healing process underway in that same tissue.
Radio-frequency skin tightening is an aesthetic technique that uses radio frequency (RF) energy to heat skin with the purpose of stimulating cutaneous collagen, elastin and hyaluronic acid production in order to reduce the appearance of fine lines and loose skin.
Electroencephalography has been used for meditation research.. The psychological and physiological effects of meditation have been studied. In recent years, studies of meditation have increasingly involved the use of modern instruments, such as functional magnetic resonance imaging and electroencephalography, which are able to observe brain physiology and neural activity in living subjects ...
In 1899 Austrian chemist von Zaynek determined the rate of heat production in tissue as a function of frequency and current density, and first proposed using high-frequency currents for deep heating therapy. [7] In 1908 German physician Karl Franz Nagelschmidt coined the term diathermy, and performed the first extensive experiments on patients. [8]
Although claims that electricity might aid bone healing were reported as early as 1841, it was not until the mid-1950s that scientists seriously studied the subject. During the 1970s, Bassett and his team introduced a new approach which attempted to treat delayed fractures; a technique that employed a very specific biphasic low frequency signal ...
Humans are sensitive to mechanical oscillations ranging in frequency from well below 1 Hz up to 100 kHz. [5] Lower frequencies of vibration lead to human motion sickness [6] while higher frequencies can lead to general annoyance and discomfort. The minimization of discomfort due to vehicle vibration is important in the automotive industry where ...
The ultrasound within tissue consists of very high frequency sound waves, between 800,000 Hz and 20,000,000 Hz, which cannot be heard by humans. Some of the advantages of ultrasound as a diagnostic and therapeutic tool include its safety profile, lack of radiation, portability, and low cost. [ 4 ]
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