Cranial electrotherapy stimulation (CES) is a form of neurostimulation that delivers a small, pulsed, alternating current via electrodes on the head. [1] CES is used with the intention of treating a variety of conditions such as anxiety, depression and insomnia. [1] CES has been suggested as a possible treatment for headaches, fibromyalgia, smoking cessation, and opiate withdrawal, [1] but there is little evidence of effectiveness for many of these conditions and the evidence for use in acute depression is not sufficient to justify it. [2]
A 2014 Cochrane review found insufficient evidence to determine whether or not CES with alternating current is safe and effective for treating depression. [2] The FDA came to the same conclusion in December 2019. [3]
A 2018 systematic review found that evidence is insufficient that CES has clinically important effects on fibromyalgia, headache, neuromusculoskeletal pain, degenerative joint pain, depression, or insomnia; low-strength evidence suggests modest benefit in patients with anxiety and depression. [4]
Electrodes are placed on the earlobes, maxilla-occipital junction, mastoid processes or temples. [5]
Despite the long history of CES, its underlying principles and mechanisms are still not clear. [1]
CES stimulation of 1 mA (milliampere) has shown to reach the thalamic area at a radius of 13.30 mm. CES has shown to induce changes in the electroencephalogram, increasing alpha relative power and decreasing relative power in delta and beta frequencies. [5] [ relevant? ]
CES has also shown to reach cortical and subcortical areas of the brain, [6] in electromagnetic tomography and functional MRI studies. [5] CES treatments have been found to induce changes in neurohormones and neurotransmitters that have been implicated in psychiatric disorders: substantial increases in beta endorphins, adrenocorticotrophic hormone, and serotonin; moderate increases in melatonin [7] [ better source needed ] and norepinephrine, modest or unquantified increases in cholinesterase, gamma-aminobutyric acid, and dehydroepiandrosterone, and moderate reductions in cortisol. [5]
Low intensity electrical stimulation is believed to have originated in the studies of galvanic currents in humans and animals as conducted by Giovanni Aldini, Alessandro Volta and others in the 18th century. Aldini had experimented with galvanic head current as early as 1794 (upon himself) and reported the successful treatment of patients with melancholia using direct low-intensity currents in 1804. [8]
CES was initially studied for insomnia and called electrosleep therapy; [9] it is also known as cranial-electro stimulation [10] and transcranial electrotherapy. [11]
Due to the rise of pharmaceutical treatments for depression, anxiety and insomnia, such as Prozac in the 1980s and Ambien in the 1990s, CES was not a well-known treatment for doctors and patients. During the mid-2000s, the combination of pharmaceutical brands becoming generic and Internet advertising caused CES devices to gain popularity. In 2011, the devices received media attention from the Wall Street Journal. [12]
In the United States, CES technology is classified by the Food and Drug Administration (FDA) as a Class III medical device and must be dispensed by or on the order of a licensed healthcare practitioner, i.e., a physician, psychiatrist, nurse practitioner, psychologist, physician assistant, or occupational therapist who has an appropriate electrotherapy license, dependent upon state regulations. [13] The United States requires a prescription for CES devices from a licensed healthcare practitioner. The FDA says that there are 11 CES devices cleared for marketing in the United States. [14] [15]
In June 2014, the FDA announced that it "has determined that there is sufficient information to establish special controls, and that these special controls, together with general controls, will provide a reasonable assurance of safety and effectiveness for CES devices. In this action, FDA is withdrawing the proposed rule and proposed order to call for PMAs [premarket approvals] for CES devices. FDA plans to issue a proposed order in the future for the reclassification of the CES device into class II." [16]
In December 2019, the FDA announced that there is no valid evidence for CES as a treatment for depression, and request new trials to be made. "FDA concluded that the four studies published after January 1, 2016, through November 1, 2019, did not contribute sufficient information in the form of valid scientific evidence to demonstrate that the subjects met the criteria for any recognized depressive disorder, as defined in DSM-5" [3]
Electroconvulsive therapy (ECT) or electroshock therapy (EST) is a psychiatric treatment during which a generalized seizure is electrically induced to manage refractory mental disorders. Typically, 70 to 120 volts are applied externally to the patient's head, resulting in approximately 800 milliamperes of direct current passing between the electrodes, for a duration of 100 milliseconds to 6 seconds, either from temple to temple or from front to back of one side of the head. However, only about 1% of the electrical current crosses the bony skull into the brain because skull impedance is about 100 times higher than skin impedance.
Transcranial magnetic stimulation (TMS) is a noninvasive form of brain stimulation in which a changing magnetic field is used to induce an electric current at a specific area of the brain through electromagnetic induction. An electric pulse generator, or stimulator, is connected to a magnetic coil connected to the scalp. The stimulator generates a changing electric current within the coil which creates a varying magnetic field, inducing a current within a region in the brain itself.
Fibromyalgia is a medical syndrome that causes chronic widespread pain, accompanied by fatigue, awakening unrefreshed, and cognitive symptoms. Other symptoms can include headaches, lower abdominal pain or cramps, and depression. People with fibromyalgia can also experience insomnia and general hypersensitivity. The cause of fibromyalgia is unknown, but is believed to involve a combination of genetic and environmental factors. Environmental factors may include psychological stress, trauma, and some infections. Since the pain appears to result from processes in the central nervous system, the condition is referred to as a "central sensitization syndrome".
Electrotherapy is the use of electrical energy as a medical treatment. In medicine, the term electrotherapy can apply to a variety of treatments, including the use of electrical devices such as deep brain stimulators for neurological disease. The term has also been applied specifically to the use of electric current to speed wound healing. The use of EMS is also very wide for managing muscular pain. Additionally, the term "electrotherapy" or "electromagnetic therapy" has also been applied to a range of alternative medical devices and treatments. Evidence supporting the effectiveness of electrotherapy is limited.
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Treatment-resistant depression (TRD) is major depressive disorder in which an affected person does not respond adequately to at least two different antidepressant medications at an adequate dose and for an adequate duration. Inadequate response has most commonly been defined as less than 25% reduction in depressive symptoms following treatment with an antidepressant. Many clinicians and researchers question the construct validity and clinical utility of treatment-resistant depression as currently conceptualized.
Transcranial direct current stimulation (tDCS) is a form of neuromodulation that uses constant, low direct current delivered via electrodes on the head. It was originally developed to help patients with brain injuries or neuropsychiatric conditions such as major depressive disorder. It can be contrasted with cranial electrotherapy stimulation, which generally uses alternating current the same way, as well as transcranial magnetic stimulation.
Responsive neurostimulation device is a medical device that senses changes in a person's body and uses neurostimulation to respond in the treatment of disease. The FDA has approved devices for use in the United States in the treatment of epileptic seizures and chronic pain conditions. Devices are being studied for use in the treatment of essential tremor, Parkinson's disease, Tourette's syndrome, depression, obesity, and post-traumatic stress disorder.
Electrical brain stimulation (EBS), also referred to as focal brain stimulation (FBS), is a form of electrotherapy used as a technique in research and clinical neurobiology to stimulate a neuron or neural network in the brain through the direct or indirect excitation of its cell membrane by using an electric current. EBS is used for research or for therapeutic purposes.
Management of depression is the treatment of depression that may involve a number of different therapies: medications, behavior therapy, psychotherapy, and medical devices.
Pulsed electromagnetic field therapy, also known as low field magnetic stimulation (LFMS) is the use of electromagnetic fields in an attempt to heal non-union fractures and depression. By 2007 the FDA had cleared several such stimulation devices.
Brain stimulation may refer to:
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.
BrainsWay Ltd. is an international company that is engaged in the development of a medical device that uses H-coil for deep transcranial magnetic stimulation as a non-invasive treatment for depression, OCD, and smoking addiction. The company was founded in 2003 and has offices in the US and Jerusalem.
Neuromodulation is "the alteration of nerve activity through targeted delivery of a stimulus, such as electrical stimulation or chemical agents, to specific neurological sites in the body". It is carried out to normalize – or modulate – nervous tissue function. Neuromodulation is an evolving therapy that can involve a range of electromagnetic stimuli such as a magnetic field (rTMS), an electric current, or a drug instilled directly in the subdural space. Emerging applications involve targeted introduction of genes or gene regulators and light (optogenetics), and by 2014, these had been at minimum demonstrated in mammalian models, or first-in-human data had been acquired. The most clinical experience has been with electrical stimulation.
Fisher Wallace Laboratories, Inc., headquartered in New York City, markets the Fisher Wallace Stimulator, a cranial electrotherapy stimulation (CES) device. The company was founded in 2007 by entrepreneur Charles Avery Fisher, son of electronics pioneer Avery Fisher, and Martin Wallace. The company acquired its lead product from Saul and Bernard Liss in 2006. Inc. magazine rated the company as being #983 and #1447 in its "Inc. 5000" listing. The Lisses had already obtained 510K marketing clearance from the Food and Drug Administration to treat anxiety, depression, and insomnia when Fisher-Wallace acquired it.
Abraham Zangen is an Israeli professor of neuroscience, head of the brain stimulation and behavior lab and chair of the psychobiology brain program at Ben-Gurion University of the Negev (BGU).
Non-invasive cerebellar stimulation is the application of non-invasive neurostimulation techniques on the cerebellum to modify its electrical activity. Techniques such as transcranial magnetic stimulation (TMS) or transcranial direct current stimulation (tDCS) can be used. The cerebellum is a high potential target for neuromodulation of neurological and psychiatric disorders due to the high density of neurons in its superficial layer, its electrical properties, and its participation in numerous closed-loop circuits involved in motor, cognitive, and emotional functions.
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Rigorous clinical trial evidence is lacking on the use of cranial electrotherapy stimulation (CES) in acute depression. Thus, at present, there is insufficient evidence on which to base decisions for using CES in treatment of acute depression