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Erotic electrostimulation (abbreviated erotic e-stim [1] and also known as electrosex) is a sexual practice involving the application of electrical stimulation to the nerves of the body, with particular emphasis on the genitals, using a power source (such as a TENS, EMS, violet wands, or made-for-play units) for purposes of sexual stimulation. Electrostimulation has been associated with BDSM activities, and erotic electrostimulation is an evolution of that practice.
Electrostimulation, in general, can cause tissue damage or even death if misused. [2] The most common problems arising from electrostimulation tend to be burns from lack of sufficiently wide surface contact, i.e. bad contact, between the electrode and the skin's surface. [3] Even at relatively low current and voltage, there is also risk of interference with normal heart function (potentially including cardiac arrest), and this risk is higher for those who use an artificial pacemaker or similar device or who have heart conditions. [3]
A few cases of accidental death as a result of autoerotic electrostimulation have been reported in the forensic science literature; the cases reported involved mains-powered, self-made devices, with current passing through the chest intentionally (usually via nipple stimulation) or unintentionally (for instance, touching an energized part with a hand). [4] In one case reported in the press, a man from York, Pennsylvania was sentenced to 20–40 years in prison for third-degree murder and reckless endangerment after killing his wife with electrostimulation to her nipples directly from a power strip plugged into the mains. [5] [6] [7]
The use of electricity for entertainment purposes dates back at least as early as the 1740s. In the 1830s, insertable electrode attachments for small magnetos could be purchased. Later in the 1800s, various electric belts (some complete with "suspensory sack") were advertised as cures for impotence. [8] In the 1920s, the American Medical Association investigated such devices, and concluded that they provided "more or less mechanical masturbation". [9]
Modern[ clarification needed ] electrostimulation first became recognized during the 1950s with the introduction of a device called the Relax-A-Cizor ,[ citation needed ] which was originally designed to stimulate the muscles of a relaxing subject using electric currents as a means of "passive exercise". Such power sources[ dubious – discuss ] are still in medical use today and are known as EMS (electrical muscle stimulation) units. Some people soon found alternative uses for the Relax-A-Cizors by placing the contacts on sexual parts of the body.
By the 1970s, medical TENS (transcutaneous electrical nerve stimulation) units were also being used for electrostimulation. In the 1980s the first devices manufactured specifically for erotic electrostimulation became available, in particular the Titillator and the Pleasure Box, later known as the PES Power Box.
In the 1970s, experimenters noticed that bare speaker wires could deliver a jolt and began using recorded and live sound for electrostimulation. At that time, there were no professionally made attachments for such play, so people built their own out of copper plumbing parts and other metal pieces with attention to resistors placed in series with the human parts to control the current for safety. Although early e-stim units used only a simple, pulsed, sinusoidal wave, newer units use more complex wave forms and also allow for the use of ambient sound or prerecorded wave forms like music or specially designed computer files for specific types of stimulation. There are now sites dedicated to the creation of MP3 files specifically for erotic journeys or symphonies, which can include such routines as rewards, punishments, very strong, and pleasantly soft portions.
There are repackaged TENS and EMS units marketed as erotic electrostimulation power sources. EMS units are designed to cause muscle contraction.
An increasing number of "body toner" or "electromassage"-type power sources are being marketed directly to consumers. Though lacking in options compared to the more expensive specialized units, these have proven to be an inexpensive method for entry level practice.
Some people craft "homemade" electrostimulation power sources, or adapt or modify commercial products (such as a Hifi or DVD system) that were never intended for electrostimulation of the human body. These can be dangerous practices; such improvised devices not specifically designed for use on the human body can easily cause injury. [3] The risk is mostly twofold. First the device can supply too much power. Second the insulation of most devices is not suited for medical equipment. For example, a transient over-voltage on the mains input can damage the isolation of the transformer, resulting in the output terminals becoming live.
Erotic electrostimulation power sources are specifically designed and manufactured for erotic use on the human body. The first analog devices became popular during the mid-1980s, and during the late 1990s digital devices also became available. Both types usually allow for adjustments of frequency and power output levels, some with complex preset "programs" and computer controls. The setups usually consist of a "box" and electrodes connected by wiring. Many of the boxes are portable and can be powered by batteries or come with built-in rechargeable batteries. Some units can be connected to remote operators via an Internet-connected computer or controlled via radio frequency key fobs.
There are other medical methods that have led to patent filings, such as the discovery that placing electrodes in the spinal cord can induce pleasurable feelings leading to orgasm. [10] There are also various apparatuses, with external or internal stimulation.
Other kinds of apparatus use interferential currents with four surface electrodes to replace the internal electrodes.
An electrode is used to deliver the actual electrostimulation to the body.
For erotic electrostimulation, these are typically items designed to be applied to the genitals such as vaginal plugs and shields, butt plugs, probes to directly stimulate the prostate, testicle rings, CBT boards, cock rings, urethral probes, and other items for penile application. The pads used with TENS units are also used in the sexual application of electrostimulation. There are also electrified nipple and breast electrodes available. The aforementioned electrodes stimulate the nerves between and underneath the area that they are placed. This can result in a pleasurable sensation and in both the female and male, resulting in orgasm.
The electrodes can be made of metals such as gold, silver, aluminum, and stainless steel. There are also electrodes made out of conductive silicone. Conductive rubber is a cheap, flexible and efficient option.
Violet wands were originally electric and neon testers, but are now split into two types: mechanical (Tesla Coil), and solid-state wands. They are used for the application of low current, high voltage (min 35 kV to max 65 kV typically), high-frequency electricity to the body, as such they are most commonly used in BDSM for erotic sensation play. Violet wands can deliver a variety of sharp, cutting, or piercing type sensations.
A violet wand typically consists of a hand-held "wand" made of plastic case which encases the mechanical (Tesla coil) or solid state components; a power cable, a collet (7/16" in the United States, 11 mm in Europe), and a cone. The collet is inside the cone end of the violet wand and is where glass and metal probes are inserted to be used with the wand. The cone is there to prevent sparks jumping from the collet directly to subject.
An artificial cardiac pacemaker, commonly referred to as simply a pacemaker, is an implanted medical device that generates electrical pulses delivered by electrodes to one or more of the chambers of the heart. Each pulse causes the targeted chamber(s) to contract and pump blood, thus regulating the function of the electrical conduction system of the heart.
A sex toy is an object or device that is primarily used to facilitate sexual pleasure, such as a dildo, artificial vagina or vibrator. Many popular sex toys are designed to resemble human genitals, and may be vibrating or non-vibrating. The term sex toy can also include BDSM apparatus and sex furniture such as sex swings; however, it is not applied to items such as birth control, pornography, or condoms. Alternative terms for sex toy include adult toy and the dated euphemism marital aid. Marital aid also has a broader meaning and is applied to drugs and herbs marketed to enhance or prolong sex.
An electrical injury, or electrical shock is damage sustained to the skin or internal organs on direct contact with an electric current.
Autoerotic fatalities are accidental deaths that occur during sexual self-stimulation when an apparatus, device or prop that is being employed to enhance pleasure causes the death. Researchers only apply the term to unintentional deaths resulting from solitary sexual activity, not suicide or acts with a partner. The incidence of autoerotic fatalities in Western countries is around 0.5 per million inhabitants each year.
Sexual stimulation is anything that leads to sexual arousal or orgasm. This thing can be physical or of other senses, and is known as a stimulus.
A transcutaneous electrical nerve stimulation is a device that produces mild electric current to stimulate the nerves for therapeutic purposes. TENS, by definition, covers the complete range of transcutaneously applied currents used for nerve excitation, but the term is often used with a more restrictive intent, namely, to describe the kind of pulses produced by portable stimulators used to reduce pain. The unit is usually connected to the skin using two or more electrodes which are typically conductive gel pads. A typical battery-operated TENS unit is able to modulate pulse width, frequency, and intensity. Generally, TENS is applied at high frequency (>50 Hz) with an intensity below motor contraction or low frequency (<10 Hz) with an intensity that produces motor contraction. More recently, many TENS units use a mixed frequency mode which alleviates tolerance to repeated use. Intensity of stimulation should be strong but comfortable with greater intensities, regardless of frequency, producing the greatest analgesia. While the use of TENS has proved effective in clinical studies, there is controversy over which conditions the device should be used to treat.
Cock and ball torture (CBT) is a sexual activity involving the application of pain or constriction to the male genitals. This may involve directly painful activities, such as genital piercing, wax play, genital spanking, squeezing, ball-busting, genital flogging, urethral play, tickle torture, erotic electrostimulation, kneeing, or kicking. The recipient of such activities may receive direct physical pleasure via masochism, emotional pleasure through erotic humiliation, or knowledge that the play is pleasing to a sadistic dominant. Many of these practices carry significant health risks.
Electromyography (EMG) is a technique for evaluating and recording the electrical activity produced by skeletal muscles. EMG is performed using an instrument called an electromyograph to produce a record called an electromyogram. An electromyograph detects the electric potential generated by muscle cells when these cells are electrically or neurologically activated. The signals can be analyzed to detect abnormalities, activation level, or recruitment order, or to analyze the biomechanics of human or animal movement. Needle EMG is an electrodiagnostic medicine technique commonly used by neurologists. Surface EMG is a non-medical procedure used to assess muscle activation by several professionals, including physiotherapists, kinesiologists and biomedical engineers. In computer science, EMG is also used as middleware in gesture recognition towards allowing the input of physical action to a computer as a form of human-computer interaction.
A violet ray is an antique medical appliance used during the early 20th century to discharge in electrotherapy. Their construction usually featured a disruptive discharge coil with an interrupter to apply a high voltage, high frequency, low current to the human body for therapeutic purposes.
An atomic battery, nuclear battery, radioisotope battery or radioisotope generator uses energy from the decay of a radioactive isotope to generate electricity. Like a nuclear reactor, it generates electricity from nuclear energy, but it differs by not using a chain reaction. Although commonly called batteries, atomic batteries are technically not electrochemical and cannot be charged or recharged. Although they are very costly, they have extremely long lives and high energy density, so they are typically used as power sources for equipment that must operate unattended for long periods, such as spacecraft, pacemakers, underwater systems, and automated scientific stations in remote parts of the world.
The picana or picana eléctrica is a device used to give an electric shock during electrical torture.
Electrical muscle stimulation (EMS), also known as neuromuscular electrical stimulation (NMES) or electromyostimulation, is the elicitation of muscle contraction using electric impulses. EMS has received an increasing amount of attention in the last few years for many reasons: it can be utilized as a strength training tool for healthy subjects and athletes; it could be used as a rehabilitation and preventive tool for people who are partially or totally immobilized; it could be utilized as a testing tool for evaluating the neural and/or muscular function in vivo. EMS has been proven to be more beneficial before exercise and activity due to early muscle activation. Recent studies have found that electrostimulation has been proven to be ineffective during post exercise recovery and can even lead to an increase in Delayed onset muscle soreness (DOMS).
A vibrator, sometimes described as a massager, is a sex toy that is used on the body to produce pleasurable sexual stimulation. There are many different shapes and models of vibrators. Most modern vibrators contain an electric-powered device which pulsates or throbs. Vibrators can be used for both solo play and partnered play by one or more people. Devices exist to be used by couples to stimulate the genitals of both partners. They can be applied to erogenous zones, such as the vulva, vagina, penis, scrotum, anus, or rectum for sexual stimulation, for the release of sexual frustration and to achieve orgasm. Vibrators may be recommended by sex therapists for women who have difficulty reaching orgasm through masturbation or intercourse.
The Magic Wand aka the True Magic Wand, Magic Wand Original, Vibratex Magic Wand and Original Magic Wand is an AC-powered wand vibrator. It was originally manufactured for relieving tension and relaxing sore muscles; however, it is most known for its use as a sex toy. Japanese company Hitachi listed the device for business in the United States in 1968. Sex educator Betty Dodson popularized its use as a vibrator and masturbation aid for women during the sex-positive movement in the late 1960s. It functions effectively as a clitoral vibrator for reaching orgasm. The wand is 12 inches (30 cm) long and weighs 1.2 pounds (540 g) with stimulation provided by its rubberized 2.5-inch (64 mm) head.
Breast torture is a BDSM activity in which sexual stimulation is provided through the intentional application of physical pain or constriction to the breasts, areolae or nipples of a submissive. It is a popular activity among the kink community. The recipient of such activities may wish to receive them as a result of masochism or they may have a desire to please a dominant who is sadistic. Those involved may also be motivated by breast fetishism. Mild breast torture such as light impact play on the breasts is also occasionally used outside of the BDSM context to provide stimulation and pleasure during conventional sex.
A sex machine is a mechanical device used to simulate human sexual intercourse or other sexual activity.
Electroanalgesia is a form of analgesia, or pain relief, that uses electricity to ease pain. Electrical devices can be internal or external, at the site of pain (local) or delocalized throughout the whole body. It works by interfering with the electric currents of pain signals, inhibiting them from reaching the brain and inducing a response; different from traditional analgesics, such as opiates which mimic natural endorphins and NSAIDs that help relieve inflammation and stop pain at the source. Electroanalgesia has a lower addictive potential and poses less health threats to the general public, but can cause serious health problems, even death, in people with other electrical devices such as pacemakers or internal hearing aids, or with heart problems.
Neurostimulation is the purposeful modulation of the nervous system's activity using invasive or non-invasive means. Neurostimulation usually refers to the electromagnetic approaches to neuromodulation.
Veinoplus is a class IIa medical device with CE marking. It is indicated for the treatment of vascular diseases. This is a neuromuscular stimulator developed by an American scientist, Jozef Cywinski.
Cosmetic electrotherapy is a range of beauty treatments that uses low electric currents passed through the skin to produce several therapeutic effects such as muscle toning in the body and micro-lifting of the face. It is based on electrotherapy, which has been researched and accepted in the field of rehabilitation, though the "scientific and medical communities have tended to sideline or dismiss the use of electrotherapy for healthy muscles".