The Victorian Obsession With the Electric Brain — Early Attempts at Brain Stimulation

In the summer of 1870, two Prussian military physicians named Gustav Fritsch and Eduard Hitzig sat at a dressing table — not in a laboratory but in Hitzig’s Berlin bedroom, using his wife’s dressing table as a workbench — and applied mild electrical current to the exposed cerebral cortex of an anesthetized dog. Specific regions of the cortex, they found, produced specific movements in specific limbs when stimulated. Other regions produced nothing. The results were so consistent and so dramatic that Fritsch and Hitzig published them the same year, and within a decade, the cortical map they had begun to sketch would become the foundation of modern neuroscience’s understanding of the motor cortex.

The image of two physicians experimenting on a dog at a dressing table captures something essential about the Victorian relationship with electricity and the brain: the combination of genuine scientific ambition, improvised methods, startling results, and an almost reckless willingness to apply new technology directly to the most complex organ in the known universe. The Victorians did not approach the electric brain cautiously. They approached it with the characteristic energy of an era that believed, with some justification, that electricity was the fundamental force of life itself — that it animated muscle, that it carried sensation, that it might be the physical substrate of thought and consciousness, and that understanding and controlling it might be the key to understanding and controlling the mind.

They were not entirely wrong. The brain is electrical, in the sense that neurons communicate via electrochemical signals and that patterns of electrical activity across neural circuits constitute the physical basis of perception, movement, and cognition. What the Victorians got wrong was nearly everything about the details — the mechanisms, the safety, the therapeutic applications, and above all the grandiose claims that attached themselves to electrical brain treatment with the reliability of iron filings to a magnet. But the core intuition that electricity and the brain were intimately related, and that understanding that relationship was the key to understanding the mind, has proven correct in ways the Victorians could not have fully anticipated.

The Electrical Background: From Galvani to Galvanism

The Victorian obsession with the electric brain did not begin in the Victorian era. Its roots lie in the late 18th century, in the laboratory of Luigi Galvani, a Bologna physician and physicist who published in 1791 his observations on what he called “animal electricity.” Galvani had noticed that the legs of dissected frogs twitched when touched by two different metals simultaneously, or when brought near an electrical machine in his laboratory. He concluded that living tissue contained an intrinsic electrical fluid — animal electricity — that was distinct from the electricity produced by machines and essential to life itself.

Galvani, Volta, and the Founding Controversy

Galvani’s interpretation was immediately contested by Alessandro Volta, who argued that the electricity in Galvani’s experiments was produced not by the frog tissue itself but by the contact between two different metals — an argument that led him to develop the voltaic pile, the first true battery, in 1800. Volta was right about the mechanism of Galvani’s specific experiments. But Galvani was not entirely wrong about his broader claim: biological tissue does generate and conduct electrical signals, a fact that the subsequent century of neurophysiology would confirm in extensive detail. The founding controversy of electrical science and biology was, in a sense, a disagreement between two men who were each partially right about different aspects of the same phenomenon.

Frankenstein and the Cultural Moment

The cultural impact of Galvani’s work extended far beyond the laboratory. The idea that electricity could animate dead tissue — demonstrated in public experiments in which electrical current was applied to the bodies of recently executed criminals, producing muscular contractions that audiences found both thrilling and horrifying — entered the popular imagination as one of the defining images of a new scientific age. Mary Shelley attended one such demonstration, given by her physician, before writing Frankenstein in 1818. The novel’s premise — that a scientist might use electricity to animate assembled dead tissue into something resembling life — was not understood by its original readers as pure fantasy. It was understood as an extrapolation of things that had actually been observed in laboratories and lecture theaters. The boundary between the plausible and the impossible had not yet been drawn, and electricity sat right on that boundary.

Galvanism as Medicine: Electrical Therapy Before the Victorians

The therapeutic application of electricity to the nervous system predates the Victorian era, though it reached its fullest expression there. As early as the 1740s, physicians and natural philosophers were applying static electrical discharges to paralyzed limbs, arthritic joints, and melancholic patients, with claimed results that were enthusiastically if inconsistently reported. The Abbé Nollet in France administered electrical shocks to lines of Carthusian monks and measured the involuntary jump produced along the chain — not a therapeutic experiment but a demonstration of electrical conduction through the human body that drew enormous crowds. By the late 18th century, electrical therapy had attracted both serious scientific investigation and the full apparatus of quackery: elaborate machines, extravagant claims, wealthy patients, and a literature of testimonials that bears a structural resemblance to the supplement marketing of any subsequent era.

John Wesley and the Democratization of Electrical Treatment

An unlikely figure in the early history of electrical medicine is John Wesley, the founder of Methodism, who published The Desideratum: Or, Electricity Made Plain and Useful in 1759 and operated electrical treatment clinics for the poor in London. Wesley was a genuine enthusiast rather than a commercial operator — his clinics were free, and he believed that electricity was a gift of providence that the medical establishment was withholding from common people for profit. His theological framing was idiosyncratic, but his observation that mild electrical current produced relief in some patients with muscular and nervous conditions was not without basis. The mechanism he proposed was wrong; the observation, in some cases, was accurate.

Victorian Electrical Neurology: Three Branches

By the time Victoria ascended the throne in 1837, electrical therapy was a well-established if scientifically disreputable practice, and the era that bears her name would transform it in three distinct directions: systematic scientific investigation of the brain’s electrical properties, clinical application of electrical stimulation to neurological and psychiatric conditions, and popular electrical therapy that ranged from the medically plausible to the thoroughly fraudulent. These three branches developed in parallel, fed each other in complicated ways, and were not always easy to distinguish from the outside.

Fritsch, Hitzig, and the Motor Cortex

The 1870 experiments of Fritsch and Hitzig, conducted at that improvised dressing table in Berlin, represent the scientific branch at its most productive. Their work built on earlier observations — most importantly, those of the British neurologist John Hughlings Jackson, who had argued since the early 1860s, based on careful observation of epileptic patients, that seizures beginning with movement in a specific body part implicated a specific region of the brain. Jackson was reasoning from the clinical presentation of disease to the organization of the brain, in the tradition of the lesion studies that had validated Broca’s localization of language. Fritsch and Hitzig provided the direct experimental confirmation: they applied current to specific cortical regions and observed specific motor responses.

Their cortical map was crude by modern standards — they identified broad motor regions rather than the precise somatotopic organization that later researchers would establish — but it was the first empirical demonstration that the cerebral cortex was electrically excitable and functionally organized. The implications were profound: if specific cortical regions controlled specific movements, then the cortex was not, as many still believed, a homogeneous mass involved in some general way in mental life, but a differentiated organ with a spatial organization that could be systematically mapped. This finding made the modern understanding of the brain possible.

David Ferrier and the Refined Cortical Map

The Scottish neurologist David Ferrier extended Fritsch and Hitzig’s work through the 1870s with a series of experiments on monkeys, cats, jackals, and other animals that produced a far more detailed and systematic cortical map. Ferrier used a more refined electrical stimulation technique and observed not just motor responses but the effects of cortical ablation — removing specific regions and documenting the resulting deficits. His results, published in The Functions of the Brain in 1876, established a cortical map that identified distinct regions for individual limbs, for vision, for hearing, and for other functions, with a precision that would not be substantially improved for decades.

Ferrier’s work attracted both scientific acclaim and organized opposition from antivivisectionists, who brought a prosecution against him under the Cruelty to Animals Act of 1876 — the first animal experimentation legislation in British history, passed partly in response to the public controversy his work had generated. The case was ultimately dismissed on the grounds that Ferrier’s experiments had been conducted under anesthesia and therefore within the Act’s provisions, but the episode illustrated the degree to which electrical brain research had entered public consciousness and provoked public anxiety. The questions Ferrier was asking — what does each part of the brain do, and how do we find out — were understood by the Victorian public as important and troubling simultaneously.

Electrical Psychiatry: Guillaume Duchenne and the Electrophysiology of Emotion

A different branch of Victorian electrical neurology was pursued by the French neurologist Guillaume-Benjamin Duchenne de Boulogne, who applied electrical stimulation not to the cerebral cortex but to the facial muscles, with the goal of understanding the physical expression of emotion. Duchenne used localized electrical current to contract specific facial muscles in his subjects — many of them patients with facial anesthesia, who could not feel the stimulation — and photographed the results, producing an atlas of induced facial expressions that he compared to the expressions of emotion in life.

His 1862 work Mécanisme de la physionomie humaine is a strange and compelling document: a scientific treatise, a photographic album, and a study of human expression that Charles Darwin found sufficiently important to cite extensively in The Expression of the Emotions in Man and Animals in 1872. Duchenne’s central finding — that genuine emotional expressions involve specific muscles that cannot be voluntarily controlled, while posed expressions involve only the muscles under voluntary command — produced what is now called the Duchenne smile, the distinction between a smile involving the orbicularis oculi (the muscle around the eye) and one that does not. The presence or absence of this involuntary muscle contraction remains one of the most studied markers of genuine versus performed positive emotion in contemporary psychology. Duchenne found it by applying electrical current to faces.

Popular Electrical Therapy: The Quackery Parallel

Running alongside the legitimate scientific work, and frequently drowning it out in terms of public attention, was a vast commercial enterprise of electrical therapy that made claims ranging from the modestly plausible to the spectacularly fraudulent. The Victorian era’s rapid expansion of electrical technology — the telegraph, the electric light, the electric motor — created a cultural environment in which electricity seemed capable of almost anything, and entrepreneurs exploited that credulity with impressive thoroughness.

Galvanic Belts and Electric Brushes

The galvanic belt — a device worn around the body that claimed to deliver therapeutic electrical current through the skin — was among the most commercially successful medical frauds of the 19th century. Variations were sold under dozens of brand names and claimed to cure everything from rheumatism to sexual dysfunction to “nervous exhaustion,” a Victorian diagnostic category that encompassed what we would now recognize as depression, anxiety, and burnout. Many of these devices delivered no meaningful electrical current at all; others delivered mild static charges that produced a tingling sensation plausible enough to sustain belief. The market for them was enormous, and they were advertised in mainstream newspapers alongside patent medicines and legitimate goods with no distinction in the advertising culture of the period.

Electric brushes, electric combs, and electric bathing apparatus — devices claiming to deliver therapeutic electricity through the scalp, through body hair, or through water — proliferated through the latter half of the century. The claims made for them were indistinguishable in structure from those made by legitimate electrical therapists: they invoked the nervous system, the vital force, the restoration of electrical balance disrupted by modern life. The difference was that legitimate practitioners, however misguided, were attempting to understand what electricity did and to apply it purposefully. The commercial vendors of galvanic belts were selling sensation and hope without any pretense of mechanism.

Neurasthenia and the Electrical Self

The most influential diagnosis of the late Victorian era was neurasthenia, coined by the American neurologist George Beard in 1869 and defined as a depletion of “nervous energy” produced by the demands of modern civilization. Beard argued that the telegraph, the railroad, the newspaper, and the accelerating pace of industrial life were exhausting the nervous systems of educated Americans and Europeans, leaving them chronically fatigued, anxious, and unable to function at full capacity. The treatment he recommended included, prominently, electrical therapy — the idea being that depleted nervous energy could be replenished by the application of external electrical current.

Neurasthenia was diagnosed in enormous numbers and treated with electrical therapy in both serious medical practice and commercial quackery for decades. Its diagnostic category was broad enough to encompass genuinely ill people alongside the merely stressed, and its electrical treatment ranged from neurologists’ offices with sophisticated galvanic equipment to mail-order belts and patent medicine. The concept of the nervous system as an electrical system that could be depleted by overuse and restored by electrical supplementation was scientifically wrong in its specifics but resonated with something real in the experience of people living through the Industrial Revolution — the genuine exhaustion and cognitive overwhelm produced by a world changing faster than human biology had adapted to accommodate.

Where the Victorians Were Right

The distance between Victorian electrical neurology and modern practice is considerable, but it is not absolute. Several threads of legitimate Victorian electrical brain science connect directly to contemporary medicine in ways that deserve acknowledgment.

The Cortical Map and Neurosurgery

The cortical mapping that Fritsch, Hitzig, and Ferrier initiated in the 1870s led directly, through the work of the Canadian neurosurgeon Wilder Penfield in the 1930s and 1940s, to the modern understanding of the somatosensory and motor homunculus — the distorted map of the body onto the cortical surface that determines which neurons control which movements and process which sensations. Penfield, operating on awake patients with cortical electrodes to identify safe surgical margins near epileptic foci, produced a systematic map of the entire motor and sensory cortex whose broad outlines remain in every medical school curriculum today. He was doing, with enormously more sophistication and ethical care, what Fritsch and Hitzig had begun at that Berlin dressing table.

ECT and Its Complicated Legitimacy

Electroconvulsive therapy, introduced in 1938 by the Italian physicians Ugo Cerletti and Lucio Bini, is the direct descendant of the Victorian tradition of applying electrical current to the brain for psychiatric purposes. Its early history was, as noted in the article on the lobotomy era in this series, poorly controlled and frequently abusive. Its modern form, administered under general anesthesia with muscle relaxant and with careful titration of the electrical stimulus, is a genuinely effective treatment for severe treatment-resistant depression — arguably the most effective acute treatment available for that condition. The Victorian premise that electrical stimulation of the brain could alter psychiatric states was not wrong. The application of that premise required a century of refinement before it produced something that could be called reliably beneficial.

Deep Brain Stimulation and Transcranial Magnetic Stimulation

The contemporary descendants of Victorian electrical brain therapy are more sophisticated than their ancestors by orders of magnitude, but the conceptual lineage is real. Deep brain stimulation — the implantation of electrodes into specific subcortical structures to deliver continuous electrical stimulation — was approved for Parkinson’s disease in 1997 and is now used for essential tremor, dystonia, obsessive-compulsive disorder, and is under investigation for depression and Alzheimer’s disease. Transcranial magnetic stimulation, which uses rapidly changing magnetic fields to induce electrical currents in cortical tissue without surgery, was approved for treatment-resistant depression in 2008 and is in clinical use in psychiatry offices worldwide. Transcranial direct current stimulation, which applies weak direct current to the scalp through electrodes, is being studied for cognitive enhancement, depression, and stroke rehabilitation.

The Victorian physician who believed that electricity could modulate brain function and treat psychiatric conditions was operating on a correct intuition with entirely inadequate tools and essentially no understanding of the mechanisms involved. The modern clinician delivering transcranial magnetic stimulation to a depressed patient is operating on the same intuition with tools precise enough to target specific cortical regions and a mechanistic understanding sufficient to generate testable predictions. The distance between them is the distance that a century and a half of neuroscience has traveled.

The Unfinished Project

The Victorians looked at the brain and saw electricity — and they were right. They looked at electricity and saw a master force capable of explaining and modifying all aspects of mental life — and they were wrong, or at minimum wildly premature. The combination of a correct fundamental insight with an overextended theoretical framework is a pattern that runs through the history of brain science with enough regularity to suggest it is structural rather than accidental: the brain is sufficiently complex that any new tool or concept capable of illuminating one aspect of its function will be seized upon and applied, prematurely, to aspects it cannot yet reach.

Phrenology had the correct insight that brain function is localized and extended it into a pseudoscience of skull reading. The lobotomy had the correct insight that frontal lobe function is related to emotional regulation and extended it into a surgical catastrophe. Victorian electrical therapy had the correct insight that the brain is an electrical organ and extended it into galvanic belts and neurasthenic fantasies. In each case, the insight was real and the overextension was consequential.

What has changed, over the century and a half since Fritsch and Hitzig sat at that dressing table, is not the human tendency to overextend a good idea. It is the infrastructure of correction — the clinical trials, the replication requirements, the long-term follow-up, the regulatory oversight — that now exists to catch the overextension before it reaches a hundred thousand patients or a Nobel Prize. The Victorians were building the science. What they lacked was the machinery for knowing when the science was not yet ready to become the medicine.

That machinery is still being built. But it is considerably further along than it was when two Prussian physicians pulled a dog onto a dressing table in Berlin and touched a wire to its cortex and watched its leg move and understood, with the particular clarity of a moment when something genuinely new enters the world, that they were looking at something important.

The Brain in History and Culture: Full Series

• Ancient Nootropics: What Egyptian, Greek, and Chinese Physicians Prescribed for Mental Acuity
• The History of Coffee — How the Most Widespread Cognitive Enhancer in History Changed Civilization
• Phrenology and Why Smart People Believed It for 150 Years
• The Lobotomy Era: How a Nobel Prize Was Awarded for One of Medicine’s Greatest Disasters
• How Soldiers in World War II Were Given Amphetamines As Standard Issue — and the Aftermath
• The History of Cocaine as a Legitimate Brain Medicine (and Freud’s Role in It)
• How the Discovery of Neurons Changed Everything We Thought We Knew About the Mind
• The Victorian Obsession With the Electric Brain — Early Attempts at Brain Stimulation — You are here