Frequencies/Symptoms in Human Body

• Frequency modulation - Wikipedia

  Frequency modulation (FM) encodes information by varying the instantaneous frequency of a carrier wave. It provides better noise rejection compared to amplitude modulation (AM), which makes it ideal for radio broadcasting. FM is widely utilized in telecommunications, radar, and sound synthesis. The modulation can be narrowband or wideband, affecting its bandwidth and signal-to-noise ratio. Techniques such as Carson's rule help estimate the bandwidth of FM signals. FM systems are also used in assistive technologies for improving speech comprehension for individuals with hearing impairments. Edwin Howard Armstrong is credited with the invention of wideband FM radio, establishing its importance in high-fidelity audio transmission.

• Remote, brain region–specific control of choice behavior with ultrasonic waves

  Ultrasonic waves delivered remotely into the brain can control choice behavior of primates.

• Why our brains hear words and songs in random noise

  Hearing and psychology experts explain audio pareidolia, or why your fan sounds like it’s talking to you.

• Beta Brain Waves: A Novel Brain Signature for Depression - Neuroscience News

  A new study identifies beta frequency neural activity in the anterior cingulate cortex (ACC) as crucial for recognizing rewards and shaping behavior.

• FNET World-wide Frequency Map

• What Are Radio Waves?

  Radio waves are a type of electromagnetic radiation. The best-known use of radio waves is for communication.

• Radio Waves | Definition, Characteristics & Applications

  Radio waves are a type of electromagnetic (EM) radiation with wavelengths in the electromagnetic spectrum longer than infrared light.

• biofields/frequencies

• Turning the Body Into a Wire

  When the human body is the communications channel, it’s hard to hack the data

• Brain’s ‘Background Noise’ May Explain Value of Shock Therapy | Quanta Magazine

  Electroconvulsive therapy is highly effective in treating major depressive disorder, but no one knows why it works. New research suggests it may restore balance between excitation and inhibition in the brain.

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• BeardenScalarElectromagneticWeapons

• GPS Antenna Mods Make Starlink Terminal Immune To Jammers

  The Starlink receivers need positioning and precise timing information to function, and currently the best way to get that information is to use a global navigation satellite system (GNSS) such as …

• Brain Stimulation Detoxifies the Alzheimer’s Brain

  40-Hz sound and light oscillations activate the brain’s waste-disposal function

• Sonar

  Sonar (sound navigation and ranging or sonic navigation and ranging)[2] is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances (ranging), communicate with or detect objects on or under the surface of the water, such as other vessels.[3]

• IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

  IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control is a monthly peer-reviewed scientific journal published by the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society. It was founded in 1954 under the name Transactions of the IRE Professional Group on Ultrasonic Engineering. The journal covers the fundamental research and technical advances in ultrasonics, ferroelectrics, piezoelectrics and frequency control. Its editor-in-chief is Alfred C. H. Yu (University of Toronto).[1]

• Ultrasound

  Ultrasound is sound with frequencies greater than 20 kilohertz.[1] This frequency is the approximate upper audible limit of human hearing in healthy young adults. The physical principles of acoustic waves apply to any frequency range, including ultrasound. Ultrasonic devices operate with frequencies from 20 kHz up to several gigahertz.

• Ultrasound Brain Stimulation: A Significant Leap in Neurotherapy - Neuroscience News

  Researchers introduced a groundbreaking non-invasive brain stimulation technique called Patterned Low-Intensity Low-Frequency Ultrasound (LILFUS).

• Microwave auditory effect

  The microwave auditory effect, also known as the microwave hearing effect or the Frey effect, consists of the human perception of audible clicks, buzzing, hissing or knocking induced by pulsed or modulated radio frequencies. The perceived sounds are generated directly inside the human head without the need of any receiving electronic device. The effect was first reported by persons working in the vicinity of radar transponders during World War II. In 1961, the American neuroscientist Allan H. Frey studied this phenomenon and was the first to publish information on the nature of the microwave auditory effect.[1][2] The cause is thought to be thermoelastic expansion of portions of the auditory apparatus,[3] although competing theories explain the results of holographic interferometry tests differently.[4]

• Moscow Signal

  The Moscow Signal was a reported microwave transmission varying between 2.5 and 4 gigahertz, directed at the Embassy of the United States, Moscow from 1953 to 1976, resulting in an international incident. The US government eventually determined it was probably an attempt at espionage, and that there were no significant health effects on embassy staff, although this conclusion has been disputed.[1]

• Havana syndrome

  Havana syndrome is a cluster of idiopathic symptoms experienced mostly abroad by U.S. government officials and military personnel. The symptoms range in severity from pain and ringing in the ears to cognitive dysfunction[6][7] and were first reported in 2016 by U.S. and Canadian embassy staff in Havana, Cuba. Beginning in 2017, more people, including U.S. intelligence and military personnel and their families, reported having these symptoms in other places, such as China, India,[8] Europe, and Washington, D.C.[9] The U.S. Department of State, Department of Defense, and other federal entities have called the events "Anomalous Health Incidents" (AHI).[10][11] Of over a thousand purported cases, the majority of US investigative bodies found only a few dozen cases to be suspicious.[2][12][13]

• Infrasound

  Infrasound, sometimes referred to as low frequency sound, describes sound waves with a frequency below the lower limit of human audibility (generally 20 Hz, as defined by the ANSI/ASA S1.1-2013 standard).[1] Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be sufficiently high. While the ear is the primary organ for sensing low sound, at higher intensities it is possible to feel infrasound vibrations in various parts of the body.

• Hydrophone

  Not to be confused with hydraulophone, a musical instrument.

• Passive acoustics - Wikipedia

  Passive acoustics is the action of listening for sounds, often at specific frequencies or for purposes of specific analyses. As applied to underwater acoustics, also termed hydroacoustics or sonar, passive acoustics can be used to listen for underwater explosions, earthquakes, volcanic eruptions, sounds produced by fish and other animals, vessel activity or aquatic detecting equipment (as in hydroacoustics to track fish).

• Underwater acoustics

  Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries. The water may be in the ocean, a lake, a river or a tank. Typical frequencies associated with underwater acoustics are between 10 Hz and 1 MHz. The propagation of sound in the ocean at frequencies lower than 10 Hz is usually not possible without penetrating deep into the seabed, whereas frequencies above 1 MHz are rarely used because they are absorbed very quickly.

• Frequency meter

  A frequency meter is an instrument that displays the frequency of a periodic electrical signal. Various types of mechanical frequency meters were used in the past, but since the 1970s these have almost universally been replaced by digital frequency counters.

• Fundamental frequency

  The fundamental frequency, often referred to simply as the fundamental, is defined as the lowest frequency of a periodic waveform. In music, the fundamental is the musical pitch of a note that is perceived as the lowest partial present. In terms of a superposition of sinusoids, the fundamental frequency is the lowest frequency sinusoidal in the sum of harmonically related frequencies, or the frequency of the difference between adjacent frequencies. In some contexts, the fundamental is usually abbreviated as f0, indicating the lowest frequency counting from zero.[1][2][3] In other contexts, it is more common to abbreviate it as f1, the first harmonic.[4][5][6][7][8] (The second harmonic is then f2 = 2⋅f1, etc. In this context, the zeroth harmonic would be 0 Hz.)

• Natural frequency

  Natural frequency, measured in terms of eigenfrequency, is the rate at which an oscillatory system tends to oscillate in the absence of disturbance. A foundational example pertains to simple harmonic oscillators, such as an idealized spring with no energy loss wherein the system exhibits constant-amplitude oscillations with a constant frequency. The phenomenon of resonance occurs when a forced vibration matches a system's natural frequency.

• ScienceDirect

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• Frontiers | Handwriting but not typewriting leads to widespread brain connectivity: a high-density EEG study with implications for the classroom

  As traditional handwriting is progressively being replaced by digital devices, it is essential to investigate the implications for the human brain. Brain ...

• First-ever images of heat 'sloshing' like sound waves captured by MIT in a superfluid

  The experiments mark the first time scientists have been able to image second sound directly and the pure motion of heat in a superfluid quantum gas.

• Riding Waves of Rhythm, Frequency, and Levels of Awareness

  Consciously attuning internal frequency to detect patterns of synchronicity.

• Using Sound Waves As A Fire Extinguisher

  In order for a fire to sustain itself, it needs three things: fuel, heat, and oxygen, with the disruption of just one of those causing the fire to extinguish. Water, sand, and carbon dioxide-based …

• - WIRELESS ISSUES AND SPECTRUM REFORM

• Category:Radio frequency allocations - Wikimedia Commons

  English: Charts, tables, and other media showing official radio frequency allocations and official and unofficial en:band plans.

• Gen M Control Frequency List

  Generation Generation put together a list of the mind control frequencies.

• How tactile vibrations create illusions

  Among the traditional five human senses, touch is perhaps the least studied. Yet, it is solicited everywhere, all the time, and even more so in recent years with the widespread daily use of electronic devices that emit vibrations. Indeed, any moving object transmits oscillatory signals that propagate through solid substrates. Our body detects them by means of mechanoreceptors located below the skin and transmits the information to the brain similarly to auditory, olfactory or visual stimuli. By studying how mice and humans perceive tactile vibrations, researchers discovered that the brain does not reliably perceive the frequency of a vibration when its amplitude varies. An illusory phenomenon is thereby created, which highlights how far our perception of the world around us can deviate from its physical reality.

• How our body 'listens' to vibrations

  We all know the feeling of a mobile phone vibrating in our hands. We perceive these vibrations so clearly thanks to specialized receptors that transduce them into neural signals sent to our brain. But how does the latter encode their physical characteristics? Neuroscientists have discovered that feeling a phone vibrate or hearing it ring is ultimately based on the same brain codes.

• Sine-wave Speech Demonstrates An Auditory One-way Door

  Sine-wave speech can be thought of as a sort of auditory illusion, a sensory edge case in which one’s experience has a clear “before” and “after” moment, like going th…

• Template

  Portrait of Sir William Herschel, pictured with the experiment that enabled him to discover infrared light. (Credit: NASA/IPAC)

• The Planet Frequencies

• Barlow's law - Wikipedia

  Pages for logged out editors learn more Barlow's law was an incorrect physical law proposed by Peter Barlow in 1825 to describe the ability of wires to conduct electricity.[1][2] It said that the strength of the effect of electricity passing through a wire varies inversely with the square root of its length and directly with the square root of its cross-sectional area, or, in modern terminology: where I is electric current, A is the cross-sectional area of the wire, and L is the length of the wire. Barlow formulated his law in terms of the diameter d of a cylindrical wire. Since A is proportional to the square of d the law becomes I ∝ d / L {\displaystyle I\propto d/{\sqrt {L}}} for cylindrical wires.[2]

• Cellphone Radiation Is Harmful, but Few Want to Believe It - Neuroscience News

  Cell phone radiation increases the risk for a number of biological and health disorders, including gliomas and acoustic neuroma brain cancer. Researchers discuss how to reduce the risk of cell phone radiation.

• 100-year-long 'megastorms' on Saturn are creating radio signals that scientists can't fully explain

  Gargantuan storms on Saturn can wrap around the entire planet and be seen for months. New research suggests their impacts persist hundreds of years longer than experts thought.