Psychosurgery | |
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MeSH | D011612 |
Psychosurgery, also called neurosurgery for mental disorder (NMD), is the neurosurgical treatment of mental disorders. [1] Psychosurgery has always been a controversial medical field. [1] The modern history of psychosurgery begins in the 1880s under the Swiss psychiatrist Gottlieb Burckhardt. [2] [3] The first significant foray into psychosurgery in the 20th century was conducted by the Portuguese neurologist Egas Moniz who, during the mid-1930s, developed the operation known as leucotomy. The practice was enthusiastically taken up in the United States by the neuropsychiatrist Walter Freeman and the neurosurgeon James W. Watts who devised what became the standard prefrontal procedure and named their operative technique lobotomy, although the operation was called leucotomy in the United Kingdom. [4] In spite of the award of the Nobel prize to Moniz in 1949, the use of psychosurgery declined during the 1950s. By the 1970s the standard Freeman-Watts type of operation was very rare, but other forms of psychosurgery, although used on a much smaller scale, survived. Some countries have abandoned psychosurgery altogether; in others, for example the US and the UK, it is only used in a few centres on small numbers of people with depression or obsessive-compulsive disorder (OCD). [5] In some countries it is also used in the treatment of schizophrenia and other disorders. [6] [7]
Psychosurgery is a collaboration between psychiatrists and neurosurgeons. During the operation, which is carried out under a general anaesthetic and using stereotactic methods, a small piece of brain is destroyed or removed. The most common types of psychosurgery in current or recent use are anterior capsulotomy, cingulotomy, subcaudate tractotomy and limbic leucotomy. Lesions are made by radiation, thermo-coagulation, freezing or cutting. [1] About a third of patients show significant improvement in their symptoms after operation. [1] Advances in surgical technique have greatly reduced the incidence of death and serious damage from psychosurgery; the remaining risks include seizures, incontinence, decreased drive and initiative, weight gain, and cognitive and affective problems. [1]
Currently, interest in the neurosurgical treatment of mental illness is shifting from ablative psychosurgery (where the aim is to destroy brain tissue) to deep brain stimulation (DBS) where the aim is to stimulate areas of the brain with implanted electrodes. [8]
All the forms of psychosurgery in use today (or used in recent years) target the limbic system, which involves structures such as the amygdala, hippocampus, certain thalamic and hypothalamic nuclei, prefrontal and orbitofrontal cortex, and cingulate gyrus—all connected by fibre pathways and thought to play a part in the regulation of emotion. [9] There is no international consensus on the best target site. [9]
Anterior cingulotomy was first used by Hugh Cairns in the UK, and developed in the US by H.T. Ballantine Jr. [10] In recent decades it has been the most commonly used psychosurgical procedure in the US. [9] The target site is the anterior cingulate cortex; the operation disconnects the thalamic and posterior frontal regions and damages the anterior cingulate region. [9]
Anterior capsulotomy was developed in Sweden, where it became the most frequently used procedure. It is also used in Scotland and Canada. The aim of the operation is to disconnect the orbitofrontal cortex and thalamic nuclei by inducing a lesion in the anterior limb of internal capsule. [9] [11]
Subcaudate tractotomy was the most commonly used form of psychosurgery in the UK from the 1960s to the 1990s. It targets the lower medial quadrant of the frontal lobes, severing connections between the limbic system and supra-orbital part of the frontal lobe. [9]
Limbic leucotomy is a combination of subcaudate tractotomy and anterior cingulotomy. It was used at Atkinson Morley Hospital London in the 1990s [9] and also at Massachusetts General Hospital. [12]
Amygdalotomy , which targets the amygdala, was developed as a treatment for aggression by Hideki Narabayashi in 1961 and is still used occasionally, for example at the Medical College of Georgia. [13]
There is debate about whether deep brain stimulation (DBS) should be classed as a form of psychosurgery. [14]
Success rates for anterior capsulotomy, anterior cingulotomy, subcaudate tractotomy, and limbic leucotomy in treating depression and OCD have been reported as between 25 and 70 percent. [1] The quality of outcome data is poor and the Royal College of Psychiatrists in their 2000 report concluded that there were no simple answers to the question of modern psychosurgery's clinical effectiveness; studies suggested improvements in symptoms following surgery but it was impossible to establish the extent to which other factors contributed to this improvement. [5] Research into the effects of psychosurgery has not been able to overcome a number of methodological problems, including the problems associated with non-standardised diagnoses and outcome measurements, the small numbers treated at any one centre, and positive publication bias. Controlled studies are very few in number and there have been no placebo-controlled studies. There are no systematic reviews or meta-analyses. [1] [15]
Modern techniques have greatly reduced the risks of psychosurgery, although risks of adverse effects still remain. Whilst the risk of death or vascular injury has become extremely small, there remains a risk of seizures, fatigue, and personality changes following operation. [5]
A 2012 follow-up study of eight depressed patients who underwent anterior capsulotomy in Vancouver, Canada, classified five of them as responders at two to three years after surgery. Results on neuropsychological testing were unchanged or improved, although there were isolated deficits and one patient was left with long-term frontal psychobehavioral changes and fatigue. One patient, aged 75, was left mute and akinetic for a month following surgery and then developed dementia. [16]
In China, psychosurgical operations which make a lesion in the nucleus accumbens are used in the treatment of drug and alcohol dependence. [17] [18] Psychosurgery is also used in the treatment of schizophrenia, depression, and other mental disorders. [6] Psychosurgery is not regulated in China, and its use has been criticised in the West. [6]
India had an extensive psychosurgery programme until the 1980s, using it to treat addiction, and aggressive behaviour in adults and children, as well as depression and OCD. [19] Cingulotomy and capsulotomy for depression and OCD continue to be used, for example at the BSES MG Hospital in Mumbai. [20]
In Japan the first lobotomy was performed in 1939 and the operation was used extensively in mental hospitals. [21] However, psychosurgery fell into disrepute in the 1970s, partly due to its use on children with behavioural problems. [22]
In the 1980s there were 10–20 operations a year in Australia and New Zealand. [8] The number had decreased to one or two a year by the 1990s. [8] In Victoria, there were no operations between 2001 and 2006, but between 2007 and 2012 the Victoria Psychosurgery Review Board dealt with 12 applications, all them for DBS. [23]
In the 20-year period 1971–1991 the Committee on Psychosurgery in the Netherlands and Belgium oversaw 79 operations. [5] Since 2000 there has been only one centre in Belgium performing psychosurgery, carrying out about 8 or 9 operations a year (some capsulotomies and some DBS), mostly for OCD. [8]
In France about five people a year were undergoing psychosurgery in the early 1980s. [24] In 2005 the Health Authority recommended the use of ablative psychosurgery and DBS for OCD. [25]
In the early 2000s in Spain about 24 psychosurgical operations (capsulotomy, cingulotomy, subcaudate tractotomy, and hypothalamotomy) a year were being performed. OCD was the most common diagnosis, but psychosurgery was also being used in the treatment of anxiety and schizophrenia, and other disorders. [7]
In the UK between the late 1990s and 2009 there were just two centres using psychosurgery: a few stereotactic anterior capsulotomies are performed every year at the University Hospital of Wales, Cardiff, while anterior cingulotomies are carried out by the Advanced Interventions Service at Ninewells Hospital, Dundee. The patients have diagnoses of depression, obsessive-compulsive disorder, and anxiety. Ablative psychosurgery was not performed in England between the late 1990s and 2009, [5] although a couple of hospitals have been experimenting with DBS. [26] In 2010, Frenchay Hospital in Bristol performed an anterior cingulotomy on a woman who had previously undergone DBS. [27]
In Russia in 1998 the Institute of the Human Brain (Russian Academy of Sciences) started a programme of stereotactic cingulotomy for the treatment of drug addiction. About 85 people, all under the age of 35, were operated on annually. [28] In the Soviet Union, leucotomies were used for the treatment of schizophrenia in the 1940s, but the practice was prohibited by the Ministry of Health in 1950. [29]
In the United States, the Massachusetts General Hospital has a psychosurgery program. [30] Operations are also performed at a few other centres.
In Mexico, psychosurgery is used in the treatment of anorexia [31] and aggression. [32]
In Canada, anterior capsulotomies are used in the treatment of depression and OCD. [16] [33]
Venezuela has three centres performing psychosurgery. Capsulotomies, cingulotomies and amygdalotomies are used to treat OCD and aggression. [34]
Evidence of trepanning (or trephining)—the practice of drilling holes in the skull—has been found in a skull from a Neolithic burial site in France, dated to about 5100 BC although it was also used to treat brain cranial trauma. There have also been archaeological finds in South America, while in Europe trepanation was carried out in classical and medieval times. [35] The first systematic attempt at psychosurgery is commonly attributed to the Swiss psychiatrist Gottlieb Burckhardt. [36] In December 1888 Burckhardt operated on the brains of six patients (one of whom died a few days after the operation) at the Préfargier Asylum, cutting out a piece of cerebral cortex. He presented the results at the Berlin Medical Congress and published a report, but the response was hostile and he did no further operations. [37] Early in the 20th century, Russian neurologist Vladimir Bekhterev and Estonian neurosurgeon Ludvig Puusepp operated on three patients with mental illness, with discouraging results. [37]
Although there had been earlier attempts to treat psychiatric disorders with brain surgery, it was Portuguese neurologist Egas Moniz who was responsible for introducing the operation into mainstream psychiatric practice. He also coined the term psychosurgery. [37] Moniz developed a theory that people with mental illnesses, particularly "obsessive and melancholic cases", had a disorder of the synapses which allowed unhealthy thoughts to circulate continuously in their brains. Moniz hoped that by surgically interrupting pathways in their brain he could encourage new healthier synaptic connections. [38] In November 1935, under Moniz's direction, surgeon Pedro Almeida Lima drilled a series of holes on either side of a woman's skull and injected ethanol to destroy small areas of subcortical white matter in the frontal lobes. After a few operations using ethanol, Moniz and Almeida Lima changed their technique and cut out small cores of brain tissue. They designed an instrument which they called a leucotome and called the operation a leucotomy (cutting of the white matter). [38] After twenty operations, they published an account of their work. The reception was generally not friendly but a few psychiatrists, notably in Italy and the US, were inspired to experiment for themselves. [38]
In the US, psychosurgery was taken up and zealously promoted by neurologist Walter Freeman and neurosurgeon James Watts. [10] They started a psychosurgery program at George Washington University in 1936, first using Moniz's method but then devised a method of their own in which the connections between the prefrontal lobes and deeper structures in the brain were severed by making a sweeping cut through a burr hole on either side of the skull. [10] They called their new operation a lobotomy. [38]
Freeman went on to develop a new form of lobotomy which could be dispensed without the need for a neurosurgeon. He hammered an ice pick-like instrument, an orbitoclast, through the eye socket and swept through the frontal lobes. The transorbital or "ice pick" lobotomy was done under local anesthesia or using electroconvulsive therapy to render the patient unconscious and could be performed in mental hospitals lacking surgical facilities. [39] Such was Freeman's zeal that he began to travel around the nation in his own personal van, which he called his "lobotomobile", demonstrating the procedure in psychiatric hospitals. [40] Freeman's patients included 19 children, one of whom was 4 years old. [41]
The 1940s saw a rapid expansion of psychosurgery, in spite of the fact that it involved a significant risk of death [42] and severe personality changes. [43] By the end of the decade, up to 5000 psychosurgical operations were being carried out annually in the US. [43] In 1949, Moniz was awarded the Nobel Prize for Physiology or Medicine.
Beginning in the 1940s various new techniques were designed in the hope of reducing the adverse effects of the operation. These techniques included William Beecher Scoville's orbital undercutting, Jean Talairach's anterior capsulotomy, and Hugh Cairn's bilateral cingulotomy. [10] Stereotactic techniques made it possible to place lesions more accurately, and experiments were done with alternatives to cutting instruments such as radiation. [10] Psychosurgery nevertheless went into rapid decline in the 1950s, due to the introduction of new drugs and a growing awareness of the long-term damage caused by the operations, [10] as well as doubts about its efficacy. [1] By the 1970s, the standard or transorbital lobotomy had been replaced with other forms of psychosurgical operations.
During the 1960s and 1970s, psychosurgery became the subject of increasing public concern and debate, culminating in the US with congressional hearings. Particularly controversial in the United States was the work of Harvard neurosurgeon Vernon Mark and psychiatrist Frank Ervin, who carried out amygdalotomies in the hope of reducing violence and "pathologic aggression" in patients with temporal lobe seizures and wrote a book entitled Violence and the Brain in 1970. [1] The National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research in 1977 endorsed the continued limited use of psychosurgical procedures. [1] [44] Since then, a few facilities in some countries, such as the US, have continued to use psychosurgery on small numbers of patients. In the US and other Western countries, the number of operations has further declined over the past 30 years,[ timeframe? ] a period during which there had been no major advances in ablative psychosurgery. [8]
Psychosurgery has a controversial history, and despite modifications, still raises serious questions about benefit, risks, and the adequacy with which consent is obtained. Its continued use is defended by references to the "therapeutic imperative" to do something in the case of psychiatric patients who have not responded to other forms of treatment, and the evidence that some patients see improvement in their symptoms following surgery. There remain however problems concerning the rationale, indications and efficacy of psychosurgery, and the results of the operation raise questions of "identity, spirit, relationships, integrity and human flourishing". [45]
Neurosurgery or neurological surgery, known in common parlance as brain surgery, is the medical specialty concerned with the surgical treatment of disorders which affect any portion of the nervous system including the brain, spinal cord and peripheral nervous system.
A lobotomy or leucotomy is a discredited form of neurosurgical treatment for psychiatric disorder or neurological disorder that involves severing connections in the brain's prefrontal cortex. The surgery causes most of the connections to and from the prefrontal cortex, the anterior part of the frontal lobes of the brain, to be severed.
Bilateral cingulotomy is a form of psychosurgery, introduced in 1948 as an alternative to lobotomy. Today, it is mainly used in the treatment of depression and obsessive-compulsive disorder. In the early years of the twenty-first century, it was used in Russia to treat addiction. It is also used in the treatment of chronic pain. The objective of this procedure is the severing of the supracallosal fibres of the cingulum bundle, which pass through the anterior cingulate gyrus.
Deep brain stimulation (DBS) is a surgical procedure that implants a neurostimulator and electrodes which sends electrical impulses to specified targets in the brain responsible for movement control. The treatment is designed for a range of movement disorders such as Parkinson's disease, essential tremor, and dystonia, as well as for certain neuropsychiatric conditions like obsessive-compulsive disorder (OCD) and epilepsy. The exact mechanisms of DBS are complex and not entirely clear, but it is known to modify brain activity in a structured way.
The frontal lobe is the largest of the four major lobes of the brain in mammals, and is located at the front of each cerebral hemisphere. It is parted from the parietal lobe by a groove between tissues called the central sulcus and from the temporal lobe by a deeper groove called the lateral sulcus. The most anterior rounded part of the frontal lobe is known as the frontal pole, one of the three poles of the cerebrum.
António Caetano de Abreu Freire Egas Moniz, known as Egas Moniz, was a Portuguese neurologist and the developer of cerebral angiography. He is regarded as one of the founders of modern psychosurgery, having developed the surgical procedure leucotomy—better known today as lobotomy—for which he became the first Portuguese national to receive a Nobel Prize in 1949.
Lars Leksell was a Swedish physician and professor of Neurosurgery at the Karolinska Institute in Stockholm, Sweden. He was the inventor of radiosurgery.
Stereotactic surgery is a minimally invasive form of surgical intervention that makes use of a three-dimensional coordinate system to locate small targets inside the body and to perform on them some action such as ablation, biopsy, lesion, injection, stimulation, implantation, radiosurgery (SRS), etc.
Walter Jackson Freeman II was an American physician who specialized in lobotomy. Wanting to simplify lobotomies so that it could be carried out by psychiatrists in psychiatric hospitals, where there were often no operating rooms, surgeons, or anesthesia and limited budgets, Freeman invented a transorbital lobotomy procedure. The ice-pick transorbital approach, a transorbital lobotomy, involved placing an orbitoclast under the eyelid and against the top of the eye socket; a mallet was then used to drive the orbitoclast through the thin layer of bone and into the brain. Freeman's transorbital lobotomy method did not require a neurosurgeon and could be performed outside of an operating room, often by untrained psychiatrists without the use of anesthesia by using electroconvulsive therapy to induce seizure and unconsciousness. In 1947, Freeman's partner James W. Watts ended their partnership because Watts was disgusted by Freeman's modification of the lobotomy from a surgical operation into a simple "office" procedure.
Thalamotomy is a surgical procedure in which a functional lesion is made into the thalamus to improve the overall brain function in patients. First introduced in the 1950s, it is primarily effective for tremors such as those associated with Parkinson's disease, where a selected portion of the thalamus is surgically destroyed (ablated). Neurosurgeons use specialized equipment to precisely locate an area of the thalamus, usually choosing to work on only one side. Bilateral procedures are poorly tolerated because of increased complications and risk, including vision and speech problems. The positive effects on tremors are immediate. Other less destructive procedures are sometimes preferred, such as subthalamic deep brain stimulation, since this procedure can also improve tremors and other symptoms of PD.
Atkinson Morley Hospital (AMH) was located at Copse Hill near Wimbledon, south-west London, England from 1869 until 2003. Initially a convalescent hospital, it became one of the most advanced brain surgery centres in the world, and was involved in the development of the CT scanner. Following its closure, neuroscience services were relocated to the new Atkinson Morley Wing of St George's Hospital, Tooting.
James Winston Watts was an American neurosurgeon, born in Lynchburg, Virginia. He was a graduate of the Virginia Military Institute as well as the University of Virginia School of Medicine. Watts is noteworthy for his professional partnership with the neurologist and psychiatrist Walter Freeman. The two became advocates and prolific practitioners of psychosurgery, specifically the lobotomy. Watts and Freeman wrote two books on lobotomies: Psychosurgery, Intelligence, Emotion and Social Behavior Following Prefrontal Lobotomy for Medical Disorders in 1942, and Psychosurgery in the Treatment of Mental Disorders and Intractable Pain in 1950.
Adamo Mario "Amarro" Fiamberti was an Italian psychiatrist who was the first to perform a transorbital lobotomy in 1937. The technique was widely applied by Fiamberti in Italy and by Walter Freeman in the United States, with different tools. Fiamberti was later named Director of the Psychiatric Hospital of Varese, when it was opened in 1964.
Psychosurgery is a surgical operation that destroys brain tissue in order to alleviate the symptoms of mental disorder. The lesions are usually, but not always, made in the frontal lobes. Tissue may be destroyed by cutting, burning, freezing, electric current or radiation. The first systematic attempt at psychosurgery is commonly attributed to the Swiss psychiatrist Gottlieb Burckhardt who operated on six patients in 1888. In 1889 Thomas Claye Shaw reported mental improvement in a case of General Paralysis of the Insane after a neurosurgical intervention. This led to a lively debate in the British Medical Journal on the usefulness of neurosurgery for the treatment of insanity. In the 1930s the Portuguese neurologist Egas Moniz developed a surgical technique for the treatment of mental illness and called it "leucotomy" or "psychosurgery". Moniz' technique was adapted and promoted by American neurologist Walter Freeman and his neurosurgeon colleague James W. Watts. They called their operation, where burr holes are drilled in the side of the skull and the white matter is sliced through in order to sever the connections between the frontal lobes and deeper structures in the brain, lobotomy. In the United Kingdom it became known as the standard Freeman-Watts prefrontal leucotomy. British psychiatrist William Sargant met Freeman on a visit to the United States and on his return to England encouraged doctors at the Burden Neurological Institute in Bristol. The surgeon who performed Leucotomy operations there was Dr Harold Crow who treated my father after an unknown surgeon in London performed the operation on him without his consent, which had an awful effect on his personality and empathy after he was invalidated on returning to UK after working as an intelligence officer in Lille spying on German collaborators but was poisoned in his drink by a German officer with subsequent anxiety for his digestion and for our family. Despite this he worked all through his life to finance our education - programme of psychosurgery.
Ablative brain surgery is the surgical ablation by various methods of brain tissue to treat neurological or psychological disorders. The word "Ablation" stems from the Latin word Ablatus meaning "carried away". In most cases, however, ablative brain surgery does not involve removing brain tissue, but rather destroying tissue and leaving it in place. The lesions it causes are irreversible. There are some target nuclei for ablative surgery and deep brain stimulation. Those nuclei are the motor thalamus, the globus pallidus, and the subthalamic nucleus.
Johann Gottlieb Burckhardt was a Swiss psychiatrist and the medical director of a small mental hospital in the Swiss canton of Neuchâtel. He is commonly regarded as having performed the first modern psychosurgical operation. Born in Basel, Switzerland, he trained as doctor at the Universities of Basel, Göttingen and Berlin, receiving his medical doctorate in 1860. In the same year he took up a teaching post in the University of Basel and established a private practice in his hometown. He married in 1863 but the following year he was diagnosed with tuberculosis and gave up his practice and relocated to a region south of the Pyrenees in search of a cure. By 1866 he had made a full recovery and returned to Basel with the intention of devoting himself to the study of nervous diseases and their treatment. In 1875, he attained a post at the Waldau University Psychiatric Clinic in Bern, and from 1876 he lectured on mental diseases at the University of Bern. Beginning in this period, he published widely on his psychiatric and neurological research findings in the medical press, developing the thesis that mental illnesses had their origins in specific regions of the brain.
Psychosurgery, also called neurosurgery for mental disorder or functional neurosurgery, is surgery in which brain tissue is destroyed with the aim of alleviating the symptoms of mental disorder. It was first used in modern times by Gottlieb Burckhardt in 1891, but only in a few isolated instances, not becoming more widely used until the 1930s following the work of Portuguese neurologist António Egas Moniz. The 1940s was the decade when psychosurgery was most popular, largely due to the efforts of American neurologist Walter Freeman; its use has been declining since then. Freeman's particular form of psychosurgery, the lobotomy, was last used in the 1970s, but other forms of psychosurgery, such as the cingulotomy and capsulotomy have survived.
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.
Wayne Goodman is an American psychiatrist and researcher who specializes in Obsessive-Compulsive Disorder (OCD). He is the principal developer, along with his colleagues, of the Yale-Brown Obsessive Compulsive Scale (Y-BOCS).
Amygdalotomy, also known as amygdalectomy, is a form of psychosurgery which involves the surgical removal or destruction of the amygdala, or parts of the amygdala. It is usually a last-resort treatment for severe aggressive behavioral disorders and similar behaviors including hyperexcitability, violent outbursts, and self-mutilation. The practice of medical amygdalotomy typically involves the administration of general anesthesia and is achieved through the application of cranial stereotactic surgery to target regions of the amygdala for surgical destruction. While some studies have found stereotactic amygdalotomy in humans to be an effective treatment for severe cases of intractable aggressive behavior that has not responded to standard treatment methods, other studies remain inconclusive. In most cases of amygdalotomy in humans, there is no substantial evidence of impairment in overall cognitive function, including intelligence and working memory, however, deficits in specific areas of memory have been noted pertaining to the recognition and emotional interpretation of facial stimuli. This is because there are specialized cells in the amygdala which attend to facial stimuli.
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