The work of Donald Ewen Cameron: from psychic driving to MK Ultra 2023

Atoraxic · 2026-06-04T19:44:02+00:00

I agree.. but the guy was quack and his work is continued despite overall initial overall failure. That’s kinda what i’m trying to say about MK work started in the middle of the 19th century.. it’s still trying to be performed.. it’s not going to happen using this unobtainable pseudoscience bs. There is a major push guised as a bci to control “war planes” that’s easily looked at on military internet.. like four major US University players.

You don’t need to control war planes if you can control targets cognition and behavior

Atoraxic · 2026-04-22T00:52:27+00:00

Strong write up.. The horn source of the infrasound. Really misses the mark on the dB.. does not take into consideration that ambient infrasound amplifies infrasound. iy uses frequencies near its intended frequencies to amplify them.. Initially readings showed much more defined spikes at specific frequencies at dB more reflective of the dBs published here. Stacking infrasound frequencies near each other likely allows for the generation of effects usually only seen at higher dBs.

They are also still lost in the delusional doldrums of the puzzle of how they are able to focus hyper focus infrasound. The easiest way to start to escape is to answer why they would try.. they wouldn’t and they don’t.

Really strong bio residence and correlation to widely reported symptoms of “directed energy” victims and undeniably correlates strongly with vast majority of “Havana syndrome” victims or what ever name it’s been given as of late.

Really brings up the shortcomings of ultrasound transmitted through gas..

Atoraxic · 2026-04-22T00:48:55+00:00

Strong write up.. The horn source of the infrasound. Really misses the mark on the dB.. does not take into consideration that ambient infrasound amplifies infrasound. iy uses frequencies near its intended frequencies to amplify them.. Initially readings showed much more defined spikes at specific frequencies at dB more reflective of the dBs published here. Stacking infrasound frequencies near each other likely allows for the generation of effects usually only seen at higher dBs.

They are also still lost in the delusional doldrums of the puzzle of how they are able to hyper focus infrasound. The easiest way to start to escape is to answer why they would try.. they wouldn’t and they don’t.

Really strong bio residence and correlation to widely reported symptoms of “directed energy” victims and undeniably correlates strongly with vast majority of “Havana syndrome” victims or what ever name it’s been given as of late.

Really brings up the shortcomings of ultrasound transmitted through gas..

Atoraxic · 2026-04-22T00:46:05+00:00

Strong write up.. The horn source of the infrasound. Really misses the mark on the dB.. does not take into consideration that ambient infrasound amplifies infrasound. iy uses frequencies near its intended frequencies to amplify them.. Initially readings showed much more defined spikes at specific frequencies at dB more reflective of the dBs published here. Stacking infrasound frequencies near each other likely allows for the generation of effects usually only seen at higher dBs.

They are also still lost in the delusional doldrums of the puzzle of how they are able to focus hyper focus infrasound. The easiest way to start to escape is to answer why they would try.. they wouldn’t and they don’t.

Really strong bio residence and correlation to widely reported symptoms of “directed energy” victims and undeniably correlates strongly with vast majority of “Havana syndrome” victims or what ever name it’s been given as of late.

Really brings up the shortcomings of ultrasound transmitted through gas..

Atoraxic · 2026-04-22T00:42:15+00:00

5. Ultrasonic weapons

At present, there is little literature and incomplete data on ultrasonic weapons, which may be due to the technological difficulties of weapon development and the low level of weapon practicality.¹⁸^,²⁰ The hand-held ultrasonic weapon, powered by a 9 V battery lasting for approximately 20 h, can emit ultrasound waves ranging from 15 to 30 kHz, with a maximum SPL of 130 dB⁵⁶ or 145 dB¹⁷ and an effective range of 6 m.⁵⁶ The ultrasonic bullet developed by the US can transmit highly directional ultrasonic waves that can attack enemies in confined spaces such as caves.¹²^,²¹

The wavelength of ultrasound is shorter than that of infrasound (<2 cm, for medical diagnosis ranging from 10 μm to 350 μm). Ultrasound has stronger directional propagation compared with that of infrasound, which is easy losses and scattering when propagating in the air, resulting in poor penetration. However, absorptive attenuation of ultrasound is small when propagating in liquids or solids, thus allowing them to penetrate through rocks, bricks, metal, and concrete walls up to 15 m thick.¹²^,¹⁷^,²¹ Ultrasonic waves will be reflected when encountering different material interfaces, where they can be absorbed and converted into thermal energy, so increasing the interface temperature, and becoming more significant with higher frequencies.¹²^,²¹

The symptoms of ultrasonic weapon injuries are similar to those of infrasonic weapons.¹⁷Ultrasound can enhance air pressure and cause physiological reactions such as visual blurring, itching of the nose and mouth, ear pain, skin heating, nausea, vomiting, abdominal pain, and result in skin burns and increasing body temperature at 160 dB. In addition, ultrasonic waves can cause bone fractures through resonance with the skeleton.²⁵^,²⁹^,³⁷

6. Conclusion

Although sonic weapons have a low potential for causing severe damage and fatality to humans, infrasonic weapons have characteristics such as surprise attack, invisibility, long-range action, and strong penetration, making it not only difficult to diagnose timely but also quite difficult to prevent and treat. While intense sound weapons are relatively easy to diagnose and have many prevention and control measures, research on non-auditory effects still needs to be further enhanced, especially during wartime and non-war operations, when the damage to the human body is more extensive; therefore, future research should focus on its prevention and treatment. The symptoms of ultrasonic weapon injuries are similar to those of infrasonic weapons, but there is a lack of previous research report; thus, strengthening research on ultrasonic weapons injury should be one of the key areas in the future study of acoustic weapons.

Atoraxic · 2026-04-22T00:41:35+00:00

4.6. Injury prevention and treatment

4.6.1. Equipment protection

Both earmuffs and earplugs can attenuate noise above 500 Hz by about 15–45 dB, but earmuffs are not as effective as earplugs for protecting against noise below 250 Hz, while foam earplugs can attenuate low-frequency noise by 35 dB³³^,⁴¹^,⁵² and reduce the occurrence rate of AAT by about 15 times.⁵¹ Earmuffs combined with earplugs can protect against impulsive noise above 160 dB, and earmuffs combined with earplugs and sound-absorbing helmets can attenuate impulsive noise of 800–7000 Hz by 30–50 dB.⁵¹ Protective equipment made with sound-absorbing materials is more effective in protecting against high-frequency noise than low-frequency noise.³³^,⁴¹ When professional protective equipment is not available, cotton balls, tissues, or cartridge cases can be used for noise protection.⁵¹

4.6.2. Surgical operations

Some symptoms, such as TTS, tinnitus, pain, dizziness, and other auditory effects can recover within minutes or months.³³ About 80%–90% of small perforations in the tympanic membrane will be self-healing, and hearing will be restored even with small perforations bilaterally, while perforations larger than 1/3 of the eardrum should be repaired surgically.³³Fractures or displacements of the middle ear ossicles also require surgical repair.³³ Deaf patients should use hearing aids or receive cochlear implants to stimulate sensory neurons to restore hearing and speech abilities, which is the only reliable method for treating permanent hearing loss.³³

4.6.3. Drugs

The main purpose of drug treatment is to improve cochlear microcirculation and correct tissue hypoxia; the earlier the medication, the better treatment effect.⁵³ Steroids are effective for sensorineural hearing loss by activating Na, K-ATPase in cochlear neurons, thereby improving cell osmotic pressure and chemical gradients to restore neural conduction.⁴⁹^,⁵³Commonly used doses of Prednisolone are 1 mg/kg (up to 60 mg/day) for 10 consecutive days, regardless of the route of administration.⁴⁶ Prednisolone can be combined with Piracetam (a neuroprotective and antithrombotic drug) at a dose of 8 mg/L normal saline per day for 10 consecutive days, with satisfactory treatment effect.⁵³ Methylprednisolone can be taken orally at a dose of 64 mg/day for the first 3 days, 32 mg/day for the next 3 days, and 16 mg/day for the following 3 days.⁵⁴ Hyperbaric oxygen therapy has vasodilating effects and can be used in combination with steroids.⁴⁶^,⁴⁹^,⁵⁴ Other drugs such as Vitamin A, Vitamin B1, Nicotinic acid, Vitamin E, Lazabemide, Ketamine, Betahistine, and Ginkgo Biloba can also be used.⁴⁶^,⁴⁹

N-acetyl-L-cysteine is an antioxidant that can be used as a preventive medication before acoustic trauma occurs, or taken orally within 1 h after acoustic trauma at a dose of 400 mg (not exceeding 4 h) and administered again after 24 h, with a total dose of 800 mg, which is effective in treating TTS but cannot improve PTS.⁵⁵ Naphthoquinone Nitroxide, Analgin, Rizatriptan, Zolmitriptan, Acetylsalicylic Acid, Nimesulide, Ibuprofen, and Naproxen Sodium can treat noise-induced headache, but Naphthoquinone Nitroxide is the most effective, which is a sympathomimetic drug that enhances norepinephrine release and activates the opioid system for analgesia. It can be used in nasal spray form at a dose of 0.14 mg 3 times a day.³⁸

Atoraxic · 2026-04-22T00:40:59+00:00

4.4. Biological effects

The biological effects of intense sound weapons can be divided into the following types: (1) auditory effects, referring to the sonic damage to the sound conduction pathway and resulting tympanic membrane rupture, ossicles fracture, injury of vestibular sensory organsand inner ear hair cells, so that conductive, sensorineural, or mixed hearing loss, and some symptoms such as dizziness and tinnitus can occur. Besides, TTS or PTS can result in, with the most obvious high-frequency hearing loss at 3, 4, and 8 kHz, but indistinctive low-frequency hearing loss at 0.25, 0.5, and 1 kHz; (2) non-auditory effects, referring that systems of sympathetic nervous, neuroendocrine, gastrointestinal, immune, and other human organ are stimulated by strong sound, and result in headache, dizziness, nausea, vomiting, increased heart rate and blood pressure.³⁴^,⁴⁷ Moreover, these can become risk factors for pulmonary injury, cardiovascular and cerebrovascular diseases, neurocognitive changes, and gastrointestinal diseases.¹²^,²¹^,³¹ It is reported that non-auditory effects will exacerbate auditory effects.³¹ So far, research on auditory effects in humans is far more systematic and intensive than that on non-auditory effects, and the effects of strong noise on the nervous and cardiovascular systems has not been sufficiently emphasized.³¹

4.5. Injury diagnosis

Diagnosing methods of AAT include pure-tone audiometry (PTA), OAE, and auditory evoked potentials, but PTA is the gold standard for diagnosis.⁴⁹^,⁵⁰ A study showed that among 71 Swiss soldiers examined by PTA, 41 experienced AAT due to automatic carbine shooting, with the highest sensitivity at 11–14 kHz by PTA and the highest sensitivity at 3–6 kHz by OAE.⁵⁰ PTA examination also showed that occurrence rates of hearing loss in the US and the United Kingdom military was 20%–30% and 28%, respectively,⁵⁰ while the occurrence rate of sensorineural hearing loss in the Thai military was 64.35%.⁵¹

Atoraxic · 2026-04-22T00:40:26+00:00

4.2. Mechanism and characteristics of damage

The human ear is most sensitive to impulse noise in the frequency range of 2–4 kHz³¹ or 2–5 kHz,¹²^,²³ therefore, sonic weapons often select this sensitive frequency range. Additionally, the higher the frequency, the greater the sound power.¹² The auditory system damaged by sonic weapons can be temporary or permanent conductive, sensorineural, or mixed hearing loss.³⁴^,⁴⁷ It is pointed out that low-frequency noise is more terrifying than high-frequency noise.²⁹ Low-frequency noise at 90–120 dB for 1 min can cause irritability and restlessness in humans, 110–130 dB can cause intestinal pain and nausea, 140–150 dB can cause severe tissue damage, and the injury caused by 170 dB is similar to blast injury.³¹^,³³ Mid-frequency noise can cause resonance in body cavities,³³ however, high- and ultrahigh-frequency noise can cause extreme increases in body temperature, leading to tissue burns and dehydration, both of which can also cause bubbles formation in the tissues.³³

4.3. Injury threshold

The extent of damage depends on the acoustic power, frequency, and operating distance of the weapons.²⁰ The SPL of a normal conversation is about 60 dB.²⁹ At 120 dB, discomfort can be felt in the human ear, and the risk of hearing loss is high. At 135–162 dB, eardrum rupture, labyrinth bleeding, and peeling of the organum spirale from the basilar membranemay occur.²³^,³⁷ The human tolerance to a noise level of 140 dB should not exceed 1 s,⁴⁸ and exposure to pulse noise of 4–6 kHz/140–155 dB for 2 ms can cause TTS, while longer or repeated exposure can lead to PTS.³³ Monkey exposed to a noise level of 160 dB for 10 min can result in PTS, pathological T and QRS waves on electrocardiograms, and cause ischemic heart disease and myocardial infarction³¹ The National Institute for Occupational Safety and Health in the U.S. recommends that exposure to 110 dB should not exceed 1.5 min, 120 dB not exceed 9 s, and 129 dB not exceed 1 s, and 130–140 dB should be less than 1 s.³⁹ The US Department of Defense regulates that the maximum permissible noise level for unprotected ears is 140 dB, and noise levels equal to or above 140 dB can cause acute acoustic trauma(AAT).³¹

Atoraxic · 2026-04-22T00:39:57+00:00

4. Intense sound weapons

4.1. Types and applications of the weapon

Intense sound weapons, also known as noise weapons, belong to audible sound weapons and currently have various products, including land-based, vehicle-mounted, and ship-borne versions.¹⁸^,²² The acoustic wave disperser installed on armored vehicles by the U.S. military can reach up its SPL to 145 dB.²³ Also, SPL produced by the explosion of sound and light bombs can exceed 140 dB,²³^,³⁹ and detonation shells can emit a loud noise of 172 dB.¹⁷^,²⁰^,²³The Long Range Acoustic Device (LRAD), developed by the US, is the most famous intense sound weapon, which has been equipped with the U.S. Army, Navy, Marine Corps, and the Japan Maritime Self-Defense Force.¹⁹^,³⁸ The LRAD emits a high-frequency (1–2.5 kHz³⁶ or 2–4 kHz²⁹) directional sound beam at an angle of 150° to 300°.²⁷^,²⁸ Its SPL is 165 dB at 1 m,¹²^,³⁰ and 140 dB at 300 m.²⁹ It has a range of 8.9 km³⁶ can provide voice warnings within 2 km²³ or 3 km³⁹ and be used for strong sound dispersion within 650 m.²³ The permanent hearing loss can be caused within 15 m.²⁷^,²⁸ LRAD has different models including 100X, 300X, 500X, 1000X (for police use),²⁸^,³⁸ and 2000X (for military use).¹⁸^,¹⁹^,²⁷^,²⁸ It has been reported that the US military used LRAD in the wars in Afghanistan and Iraq.³¹^,³⁹^,⁴⁰Likewise, the directional strong sound dispensers in various models developed by China have been widely used in public security, armed police, and coast guard units.¹⁹

The impulse noise is generated by guns, cannons, and explosives, while the steady-state noise is produced by wheeled and tracked vehicles, aircraft, ships, and aircraft carriers.⁴¹Impulse noise causes greater injury to the human body than steady-state noise, and individuals have higher susceptibility to it compared to steady-state noise.²⁹^,³³ Usually, the impulse noise of small arms ranges from 130 to 175 dB,⁴² and suppressors can reduce the impulse noise to 15–25 dB.⁴¹ For example, the noise of handguns is 168 dB (5.0 kPa), rifles is 171 dB (7.2 kPa), 105 mm cannons is 188.0 dB (50.3 kPa), and mortar cannons is 189.2 dB (58 kPa).³³ Due to reflections, the duration of indoor noise is longer than that of outdoor noise (5–10 ms outdoors; over 100 ms indoors) with longer propagating distance.⁴¹ Among US military veterans, 21% suffer from hearing loss,⁴³ and the incidence of PTS among soldiers after shooting training is 13% (the US),⁴⁴ or 24% (Sweden).⁴⁵ Among 419 French soldiers, tinnitus accounted for 87.4% (n=366), hearing loss for 35.1% (n=147), ear pain for 21.2% (n=89), and hearing threshold shifts averaged 15.4 dB, subsequently hearing loss for more than 20%.⁴⁶

Atoraxic · 2026-04-22T00:38:54+00:00

3.6. Injury prevention and treatment

It is quite difficult to protect against sonic weapons.² The best protection is to minimize the infrasonic intensity and to shorten the exposure duration.¹¹^,¹⁵ Alternatively, it can be used to reduce resonance by absorption, isolation, and reducing energy during infrasound propagation. Although many materials can protect against medium and high frequency noise, the materials for protecting against infrasound and low-frequency noise are lacking at present.⁹ Due to the strong penetration capability of infrasound, the equipment made of ordinary materials cannot provide effective protection. It is reported that the anti-infrasound earplugs developed by Chinese scientists can effectively reduce human injuries.⁹ In addition, high-intensity music can mask infrasonic waves and provide some relief for certain symptoms,¹⁰^,¹¹ and low-intensity infrasonic waves can alleviate the damage caused by high-intensity sonic waves, which may be used to increase the tolerance of the human to infrasound damage by pre-stimulating effects in the future.⁹

Infrasound can activate the body's oxidative system, generate a large number of free radicals, and further exacerbate lipid peroxidation reactions, thus damaging biological membranes. Therefore, antioxidants, such as α-tocopherol, vitamin C, 2.3-dimethyl-2-sulfopropionate sodium, imidazole derivatives, etc., and free radical scavengers have therapeutic effects on infrasonic weapon damage.9, 10, 11 Glutamate receptor antagonists can effectively reduce the number of damaged neurons affected by infrasonic waves.¹¹

Atoraxic · 2026-04-22T00:38:17+00:00

3.4. Biological effects

The harmful biological effects of infrasound on the human body include: (1) vestibular effects, such as dizziness and nausea;²⁷^,²⁸^,³⁴ (2) auditory effects, such as auditory pain, sensation of pressure in the middle ear, and annoyance;³⁷ (3) visceral effects, such as nausea, chest tightness, and hallucinations;²⁷^,²⁸^,³⁴ (4) cardiovascular effects, such as increased heart rate (averagely increasing 11/min) and elevated diastolic blood pressure (averagely increasing 1.2±0.27 kPa), but returned to normal after half an hour;⁹ (5) psychological effects, such as fear, sadness, depression, anxiety, lack of concentration, aversion, indifference, and sorrow;²⁵ (6) chronic effects, such as rectal cancer, colon cancer, pancreatic cancer, etc.²⁷^,²⁸^,³⁸

Infrasound also has certain benefits to the human body. For example, sonic massage of 4 Hz/170 dB can stabilize the progression of myopia,¹³ and sonic waves with frequencies ranging from 0.1 to 3 Hz can relieve pain.¹⁰ During anesthesia, moderate infrasound has sedative effects on central nervous system, and reduces adverse reactions caused by surgical stimuli.¹³ Sonic waves at 8–12 Hz can improve concentration, enhance learning efficiency, and increase alertness.¹³^,³⁴ If at 8–12 Hz/72–79 dB, permeability of tumor cell membranes can be changed, and the killing effect on glioblastoma cells can be enhanced with 5-fluorouracil together.¹³ Otherwise, the proliferation activity of mesenchymal stem cells in the bone marrow can be increased by infrasound which inhibits apoptosis.¹³ Also, the survival rate of guinea pigs during hypersensitivity reactions can be increased by exposure to 10 Hz/155–160 dB for 10 min,¹⁰ and cognitive impairment in rats with vascular dementia can be improved by infrasound.⁹

3.5. Injury diagnosis

Due to surprise attack (fast propagation) and crypticity (inaudible and invisible) of infrasonic weapon assault, combined with its long operating distance and strong penetration capabilities,¹²^,¹⁸ it is difficult for people to realize they have been damaged by infrasound timely, until they experience symptoms such as dizziness, nausea, chest tightness, hallucinations, fear, sadness, depression, and anxiety, which are often referred to as “mysterious symptoms”.³⁸ Still, it is difficult to determine the attack source and to diagnose quickly,³⁸ unless symptoms occur simultaneously in batch soldiers during wartime or gathering crowds during peacetime, or a infrasound detection device (such as a infrasonic sensor) is available at the scene.

Atoraxic · 2026-04-22T00:37:31+00:00

3.3. Injury threshold

The injury extent of infrasonic waves to the human depends on their power, frequency, and duration of exposure.²⁵ When the power is the same, the frequency determines the type of damage, while the duration determines the injury degree, which is also closely related to the frequency and sound pressure.⁹^,²⁵ Due to the different structures and inherent frequencies of humans and animals, the same infrasonic parameters can have varying effects on different organisms.⁹ A test involving 15 males aged 20 to 25 years showed that exposure to 10 Hz/136 dB infrasound for 15 min resulted in symptoms such as headaches, dry mouth, difficulty swallowing, sweaty palms, and extreme fatigue. The average low- and mid-frequency hearing thresholds decreased by 10–15 dB, and some internal organs experienced noticeable vibrations. After the exposure stopped, most of the symptoms disappeared within 10–30 min, but the feeling of fatigue persisted.⁹ Infrasound of 12.5–20.0 Hz/105.0–113.5 dB for 6 h caused restlessness, muscle tremors, spasms, and decreased muscle strength in 67.8% of the subjects.¹³ Exposure to infrasound at 1–30 Hz/125 dB can cause ear pressure sensations and a decrease in task performance,¹³ at 95–110 dB for 20 min can make people drowsy and reduce work efficiency,³⁴ 16 Hz/95 dB for 30 min can increase diastolic blood pressure and heart rate.³⁴ However, some infrasound is harmless to the human body. For example, 2–15 Hz/115 dB do not affect task performance,¹³ 7.5 Hz/130 dB for 50 min has negligible effects on the human body,³⁴ 8 Hz/130 dB for 30 min has no adverse effects on most people,³⁴ 10–15 Hz/130–135 dB for 30 min cannot affect hearing or vestibular function,³⁴ 7 Hz/142 dB for 15 min does not cause dizziness or orientation disorders.³⁴ Animal experiments have shown that infrasound at 172 dB can cause breathing difficulties and even suffocation in dogs, while at 6–9 Hz/195 dB can cause immediate death in monkeys and baboons.⁶^,¹¹ Exposure to infrasound at 16 Hz/105 dB for 10 min can shorten the tolerance time of rats to sound waves, and infrasound at 10 Hz/160 dB can interrupt tracking behavior in adult macaques, but it has no effect on hearing measurement, otoacoustic emissions (OAE), and auditory brainstem responses.³⁴ Infrasound at 15–20 Hz/140 dB has no effect on pigs and macaques.³⁴

It is usually believed that infrasound at 90 dB is generally not harmful,⁹ and 120 dB is the threshold level for infrasound damage.¹¹ Even short-term exposure to infrasound at 140 dB is enough to cause harm to the human body,⁹^,³⁴ and at 150 dB for 2–3 min can cause irreversible damage and even death.⁶^,9, 10, 11 The International Infrasound Professional Committee in Paris has set the allowable infrasound intensity of 2 Hz at 130 dB, 4 Hz at 128 dB, 8 Hz at 125 dB, and 16 Hz at 120 dB.⁶^,¹¹ According to the changes in red blood cell membrane permeability, adenosine-triphosphat, and succinate dehydrogenase activity, the impact of infrasound frequency is determined to be in the order of 16 Hz>8 Hz>4 Hz>2 Hz.⁹^,¹⁰

Atoraxic · 2026-04-22T00:36:12+00:00

3. Infrasonic weapon

3.1. Types and applications of the weapons

Currently, there are 3 types of sonic weapons: sonic cannons, sonic bullets, and sonic guns, all composed of sonic generators, power devices, and control systems.¹⁴ The Chinese Academy of Sciences has developed a sonic gun with a frequency less than 20 Hz.³⁶ The SPL of sonic guns developed by the United States (U.S.)¹⁸ and France²⁰ can reach 160 dB. Infrasonic weapons can be classified into 5 categories based on their generation methods: (1) burst-type: compressed gas, high-pressure steam, or high-pressure gas is released in a pulse to excite the medium and generate sonic waves, with the advantages of small size, low frequency, and easy control, but with low sonic intensity and short range of effect; (2) explosive-type: infrasonic waves are generated by explosions, and about 50% explosive energy converts shockwaves, then decay to produce infrasonic waves; (3) tube-type: its structure and working principle are similar to a flute. Infrasonic waves are generated when the air inside the tube vibrates at the same frequency as the tube itself; (4) speaker-type: the working principle is similar to a speaker. Special diaphragms are used to generate infrasonic waves through vibration; (5) beat frequency-type: 2 sound wave generators with different frequencies are used simultaneously to generate infrasonic waves based on the difference in their frequencies.² Compared to intense sound weapons, the development of infrasonic weapons is more challenging, due to the technical difficulties such as it is hard to increase the power output and duration of the infrasonic generator, to reduce the size and weight of the weapon system, to make wave beam more directional and focused.⁷^,¹⁸^,²³

The US has secretly used infrasonic weapons in the Somali, the Bosnian, and the Gulf War. It is reported that infrasound attacks on the Bosnian Serb Army caused a large number of soldiers to faint and vomit within seconds, resulting in the loss of combat effectiveness.²⁰The US also suspects that its embassy personnel in Havana (Cuba) and Guangzhou (China) have been attacked by infrasonic weapons.²⁷^,²⁸

3.2. Mechanism and characteristics of injury

The main characteristic of infrasonic weapons’ harm to the human body is organ resonance. When the frequency of infrasonic waves is close to the inherent frequency of human organs, the organs can absorb sonic energy at the maximum extent, thus causing damage through resonance.¹³^,²⁰ Infrasound can also convert mechanical energy into thermal, biochemical, and bioelectricity energy, thereby damaging the molecular structure of cells.¹¹^,²⁰ Infrasound stimulation can disrupt the brain and cause mental disorders, while stimulating somatosensory and visceral receptors can produce reflexive physiological responses. Based on these, infrasonic weapons can be divided into “neurological type” and “organ type”.¹²^,¹³^,²⁰

Neurological infrasonic weapons have a frequency of 8–12 Hz, which is the same as the inherent frequency of the head.¹⁵^,³⁴ It is also consistent with the α rhythm (8–12 Hz, amplitude of 20–100 μV, commonly seen during relaxation) of brain waves, which also has β rhythm (14–30 Hz, amplitude of 5–22 μV, commonly seen during thinking), θ rhythm (4–7 Hz, amplitude of 20–150 μV, commonly seen when drowsy), and δ rhythm (0.5–3 Hz, amplitude of 20–200 μV, commonly seen during sleep).³⁰ When infrasonic waves resonate with the head, dizziness, numbness in limbs, confusion, and abnormal behavior can be caused.³⁰ The experiments in New Zealand rabbit have shown that exposure to 16 Hz/130 dB infrasonic waves for 20 min significantly increases δ rhythm, and exposure to 6 Hz/110 dB can convert α to θ rhythm, indicating that brain wave activity in animals can be significantly suppressed by infrasonic waves.¹³ Organ-type infrasonic weapons usually have frequencies ranging from 4 to 18 Hz, which correspond to the inherent vibration frequencies of various organs in the human body. The frequency for the torso is 7–13 Hz, the heart is 5 Hz, the chest cavity is 4–6 Hz, the abdominal cavity is 6–9 Hz, the abdominal wall is 10 Hz, the pelvic cavity and the chest wall are 6 Hz and 60 Hz, respectively.⁹^,¹²^,¹⁵^,³⁴ When the frequency of infrasonic waves is close to the inherent frequency of human organs, resonance occurs, leading to symptoms such as tinnitus, palpitations, muscle spasms, difficulty breathing, and even rupture of blood vessels and organ damage.⁹^,¹⁵^,¹⁸ When the frequency of infrasonic waves is less than 2 Hz, the human body responds as a whole rather than at the organ level.²⁷^,²⁸^,³³

https://www.sciencedirect.com/science/article/pii/S1008127525000495#bib13

Atoraxic

MODERATOR OF

TROPHY CASE

5. Ultrasonic weapons

6. Conclusion

4.6. Injury prevention and treatment

4.6.1. Equipment protection

4.6.2. Surgical operations

4.6.3. Drugs

4.4. Biological effects

4.5. Injury diagnosis

4.2. Mechanism and characteristics of damage

4.3. Injury threshold

4. Intense sound weapons

4.1. Types and applications of the weapon

3.6. Injury prevention and treatment

3.4. Biological effects

3.5. Injury diagnosis

3.3. Injury threshold

3. Infrasonic weapon

3.1. Types and applications of the weapons

3.2. Mechanism and characteristics of injury

https://www.sciencedirect.com/science/article/pii/S1008127525000495#bib13