Health
Eleanor Maguire, Memory Expert Who Studied London Cabbies, Dies at 54
Eleanor Maguire, a cognitive neuroscientist whose research on the human hippocampus — especially those belonging to London taxi drivers — transformed the understanding of memory, revealing that a key structure in the brain can be strengthened like a muscle, died on Jan. 4 in London. She was 54.
Her death, at a hospice facility, was confirmed by Cathy Price, her colleague at the U.C.L. Queen Square Institute of Neurology. Dr. Maguire was diagnosed with spinal cancer in 2022 and had recently developed pneumonia.
Working for 30 years in a small, tight-knit lab, Dr. Maguire obsessed over the hippocampus — a seahorse-shaped engine of memory deep in the brain — like a meticulous, relentless detective trying to solve a cold case.
An early pioneer of using functional magnetic resonance imaging (f.M.R.I.) on living subjects, Dr. Maguire was able to look inside human brains as they processed information. Her studies revealed that the hippocampus can grow, and that memory is not a replay of the past but rather an active reconstructive process that shapes how people imagine the future.
“She was absolutely one of the leading researchers of her generation in the world on memory,” Chris Frith, an emeritus professor of neuropsychology at University College London, said in an interview. “She changed our understanding of memory, and I think she also gave us important new ways of studying it.”
In 1995, while she was a postdoctoral fellow in Dr. Frith’s lab, she was watching television one evening when she stumbled on “The Knowledge,” a quirky film about prospective London taxi drivers memorizing the city’s 25,000 streets to prepare for a three-year-long series of licensing tests.
Dr. Maguire, who said she rarely drove because she feared never arriving at her destination, was mesmerized. “I am absolutely appalling at finding my way around,” she once told The Daily Telegraph. “I wondered, ‘How are some people so bloody good and I am so terrible?’”
In the first of a series of studies, Dr. Maguire and her colleagues scanned the brains of taxi drivers while quizzing them about the shortest routes between various destinations in London.
The results, published in 1997, showed that blood flow in the right hippocampus increased sharply as the drivers described their routes — meaning that specific area of the brain played a key role in spatial navigation.
But that didn’t solve the mystery of why the taxi drivers were so good at their jobs.
Dr. Maguire kept digging. Using M.R.I. machines, she measured different regions in the brains of 16 drivers, comparing their dimensions with those in the brains of people who weren’t taxi drivers.
“The posterior hippocampi of taxi drivers were significantly larger relative to those of control subjects,” she wrote in Proceedings of the National Academy of Sciences. And the size, she found, correlated with the length of a cabby’s career: The longer the cabby had driven, the bigger the hippocampus.
Dr. Maguire’s study, published in March 2000, generated headlines around the world and turned London taxi drivers into unlikely scientific stars.
“I never noticed part of my brain growing,” David Cohen, a member of the London Cab Drivers Club, told the BBC. “It makes you wonder what happened to the rest of it.”
Dr. Maguire wondered, too: Why (and how) did their hippocampi grow?
She followed up with other studies. One showed that the hippocampi of bus drivers — whose routes were set rather than navigated from memory — didn’t grow. Another showed that prospective taxi drivers who failed their tests did not gain any hippocampus volume in the process.
The implications were striking: The key structure in the brain governing memory and spatial navigation was malleable.
In a roundabout way, Dr. Maguire’s findings revealed the scientific underpinnings of the ancient Roman “method of loci,” a memorization trick also known as the “memory palace.”
This technique involves visualizing a large house and assigning an individual memory to a particular room. Mentally walking through the house fires up the hippocampus, eliciting the memorized information. Dr. Maguire studied memory athletes — people who train their brains to memorize vast amounts of information quickly — who used this method, and observed that its effectiveness was “reflected in its continued use over two and a half millennia in virtually unchanged form.”
But recalling information was only half the story.
In studying patients with damage to the hippocampus, including those with amnesia, Dr. Maguire found that they couldn’t visualize or navigate future scenarios. One taxi driver, for instance, struggled to make his way through busy London streets in a virtual-reality simulation. Other amnesiacs couldn’t imagine an upcoming Christmas party or a trip to the beach.
“Instead of visualizing a single scene in their mind, such as a crowded beach filled with sunbathers, the patients reported seeing just a collection of disjointed images, such as sand, water, people and beach towels,” the journal Science News reported in 2009.
The hippocampus, it turns out, binds snippets of information to construct scenes from the past — and the future.
“The whole point of the brain is future planning,” Dr. Maguire was quoted as saying in Margaret Heffernan’s book “Uncharted: How to Navigate the Future” (2020). “You need to survive and think about what happened when I was last here, is there a scary monster that will come out and eat me? We create models of the future by recruiting our memories of the past.”
Eleanor Anne Maguire was born on March 27, 1970, in Dublin. Her father, Paddy Maguire, was a factory worker. Her mother, Anne Maguire, was a receptionist.
Growing up, Eleanor was obsessed with “Star Trek.”
“My first scientific hero was fictional — Spock, science officer on the Starship Enterprise,” she told the journal Current Biology in 2012. “He embodied so much of what attracted me to science. He was inquisitive, logical, honest, meticulous, calm, fearless in facing the unknown, innovative and unafraid of taking risks.”
She graduated from University College Dublin in 1990 with a degree in psychology, and returned to earn her doctorate there after receiving a master’s degree from the University College of Swansea (now Swansea University).
Dr. Maguire joined the faculty at University College London in 1995 and never left.
She is survived by her parents. Her brother, Declan, died in 2019, also of cancer.
At Dr. Maguire’s memorial service, Dr. Price spoke about the energy and excitement her friend and longtime colleague generated at the lab, recalling that Dr. Maguire’s mother had called nightly to remind her daughter to go home.
“It wasn’t just a job,” Dr. Price said. “It consumed us, day and night.”
There was a sense that they were onto something big.
“We were among the first to use cutting-edge technology to peer inside the healthy, living human brain and witness its functions in action,” Dr. Price said. “It was an exhilarating and transformative time in neuroscience, and Eleanor’s curiosity and creativity were instrumental to numerous discoveries.”
Health
Single infusion of controversial drug changed severe depression symptoms within hours, study finds
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People experiencing severe depression with suicidal symptoms may not have to wait weeks for traditional antidepressants to take effect.
A recent review suggests that a single intravenous ketamine infusion can provide rapid relief for some patients.
Originally developed as an anesthetic, ketamine is a medicine that can reduce pain and, in some cases, help treat depression, but it can also be misused as a recreational drug, experts warn.
SINGLE DOSE OF POWERFUL PSYCHEDELIC CUTS DEPRESSION SYMPTOMS IN CLINICAL STUDY
Researchers from the University of Connecticut School of Medicine reviewed 26 clinical trials that included more than 1,100 patients. Approximately 626 received ketamine and 540 served as controls who did not take the drug.
Most of the trials included patients with major depressive disorder, but 11.5% included those with bipolar depression and 7.7% included people with both unipolar and bipolar depressive diagnoses.
A recent review suggests that a single intravenous ketamine infusion can provide rapid relief for some patients with treatment-resistant depression. (iStock)
Compared to a placebo, a single treatment significantly reduced depression in just four hours and dramatically lowered suicidal thoughts within 24 hours, the study found.
Patients reported fewer depressive symptoms after a week and reduced suicidal thoughts for up to a month after one ketamine infusion. Those who received repeated ketamine infusions showed a similar reduction of suicidal and depressive symptoms at the end of the treatment.
WHAT IS KETAMINE THERAPY? MORMON REALITY STARS TOUT CONTROVERSIAL TREATMENT
The most common adverse effects of ketamine – including headaches, numbness, dissociation (“out of body” experiences), nausea, dizziness and visual disturbances – were temporary and resolved within hours of the infusion.
Rarer, more serious side events included hospitalization, suicide attempts and suicide, but most were unrelated to ketamine, the review stated.
The analysis was published in May in JAMA Psychiatry.
Treatment-resistant depression
Major depressive disorder is a formal psychiatric diagnosis affecting approximately 280 million people globally, according to recent research.
Effective treatment involves a combination of therapy and medication, frequently antidepressants. However, for a few patients, symptoms do not respond to multiple therapies, a condition known as treatment-resistant depression, doctors say.
“When all existing treatment options fail, patients with severe depression could consider ketamine infusions.”
These patients are at a higher risk of very serious, sometimes tragic consequences, including suicidal thoughts, suicide attempts and death.
“When all existing treatment options fail, patients with severe depression could consider ketamine infusions,” lead author Taeho Greg Rhee, PhD, of the University of Connecticut School of Medicine, told Fox News Digital. “This is still a safer option when compared to electroconvulsive therapy (ECT).”
Compared to a placebo, a single treatment significantly reduced depression in just four hours and dramatically lowered suicidal thoughts within 24 hours, the study found. (iStock)
Traditional antidepressants stabilize mood by slowly elevating serotonin levels in the brain, but it can take weeks for the full effect to be achieved.
Ketamine, in contrast, works rapidly by blocking glutamate, a neurotransmitter that can impact emotions negatively when levels are too high in the brain, according to Cleveland Clinic.
Implications for care
The authors say their findings have two important potential clinical applications.
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First, ketamine’s rapid effects can be a life-saving treatment in the emergency room for patients presenting with suicidal ideation.
Experts caution that the medication should only be administered in closely monitored settings, such as clinics, to ensure safe treatment. (iStock)
Second, the effects of a single ketamine infusion are relatively short-lived – as almost all patients relapsed with depressive symptoms after a single infusion – so those with treatment-resistant depression will need repeated sessions.
“While intravenous ketamine is not yet FDA-approved for treating depression, it may still be used with off-label indications for those with severe depression and/or with a high risk of suicidal behaviors,” said Rhee.
Experts urge caution despite promise
Dr. Lama Bazzi, a psychiatrist in private practice in New York City, has had several patients receive ketamine infusions.
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“For a small subset of patients in a major depressive episode or struggling with suicidal thoughts, intravenous ketamine can be genuinely lifesaving,” Bazzi, who was not involved in the study, told Fox News Digital. “The relief they experience is almost immediate, offering them distance from the intensity of their emotions.”
However, she cautions that the medication should only be administered in closely monitored settings, such as clinics, to ensure safe treatment.
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Ketamine is not a panacea, Rhee agreed, warning of the potential risk of abuse and addiction.
“It should only be used medically,” he advised.
Ketamine’s rapid effects can be a life-saving treatment in the emergency room for patients presenting with suicidal ideation, some experts claim. (Getty Images)
Dr. Marc Siegel, Fox News senior medical analyst, noted in previous comments to Fox News Digital that ketamine is increasingly being used to treat severe depression, but emphasized that it should be administered under careful medical supervision because of its potential risks.
Study limitations
Although the studies compared ketamine with a placebo, some patients may have realized they were receiving the drug. This could have influenced how they reported their symptoms and how effective they perceived the treatment to be, according to the researchers.
“It should only be used medically.”
Another limitation is the small sample size of the studies, which could make the effects seem disproportionately magnified.
Also, as this was a review of many different studies, it is challenging to apply the findings to the general population, the researchers noted.
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“While long-term outcomes have not been studied, I believe that when patients are severely depressed or suicidal, ketamine is sometimes the only choice that almost always works,” Bazzi added.
Anyone interested in exploring alternative depression treatments should first consult a doctor.
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Tick bite-related ER visits are at their highest seasonal levels since 2017 across most U.S. regions, raising concerns about increased Lyme disease and other tick-borne illnesses.
That’s according to recent data from the Centers for Disease Control and Prevention’s Tick Bite Tracker, which monitors weekly emergency department visits associated with tick bites across the country.
For every 100,000 ER visits, approximately 71 were related to tick bites in April 2026, compared to a historical seasonal average of roughly 30 per 100,000.
DOCTORS REVEAL KEY SIGNS OF LYME DISEASE AS TICK SEASON INTENSIFIES ACROSS US
Some of the highest rates of tick-based ER visits were among children younger than 10 years and adults between 70 and 79 years.
A close-up shows a parasitic mite in motion on a human fingertip, highlighting the potential for disease transmission such as encephalitis. (iStock)
“Over the past three decades, the geographic range of the blacklegged tick has expanded significantly, and with it, the risk of Lyme disease and other Ixodes-transmitted infections,” Dr. Steven Goldberg, a family medicine physician who practices urgent care and family medicine at UofLHealth in Louisville, Kentucky, told Fox News Digital.
‘RABBIT FEVER’ CASES RISING IN US AS CDC WARNS OF ZOONOTIC BACTERIAL DISEASE
“The Ohio River Valley region is one of the most striking examples — Lyme disease cases in Ohio have increased roughly 10-fold over the past decade, likely driven by the convergence of Northeastern and Upper Midwestern tick populations meeting in that corridor.”
States like Virginia and West Virginia, as well as areas south of the traditional endemic zone, are reporting increasing tick abundance and disease cases, the doctor noted.
“Over the past three decades, the geographic range of the blacklegged tick has expanded significantly.”
“The lone star tick is also expanding its range northward beyond its traditional stronghold in the Southeast, which means diseases like ehrlichiosis and alpha-gal syndrome are appearing in regions where clinicians may not yet be thinking about them,” he warned.
Some climate studies predict that the blacklegged tick’s suitable habitat could expand by over 200% by the end of the century, Goldberg noted, including into Canada and across the central and southern U.S.
What’s driving the spike?
“Warmer, wetter conditions allow ticks to survive in habitats that previously would have been too cold,” said Dr. Suraj Saggar, chief of infectious disease at Holy Name Medical Center in Teaneck, New Jersey. “Milder winters also extend the lifespan of both ticks and the animals they feed on, accelerating tick reproduction and shortening their life cycles.”
Areas that historically experienced longer, colder winters or significant snow cover are now more hospitable to ticks, the doctor noted.
COPPERHEAD SNAKE BITE LEAVES MAYOR’S WIFE IN ‘EXCRUCIATING PAIN,’ HE REVEALS
“As temperatures rise and precipitation patterns change, ticks are able to spread northward and thrive in new ecosystems,” he said.
Another contributing factor is increased land development and human expansion into wooded and grassy areas, as well as reforestation of formerly agricultural land.
“As temperatures rise and precipitation patterns change, ticks are able to spread northward and thrive in new ecosystems,” an expert said. (iStock)
“The recovery and expansion of white-tailed deer populations — critical hosts for adult blacklegged ticks — has been a major driver,” Goldberg added. “Deer density is positively associated with Lyme disease incidence. Small mammal communities, particularly white-footed mice that serve as key reservoir hosts for Borrelia burgdorferi, also play a central role.”
Tick-borne diseases
Tick bites are known to transmit numerous illnesses, the most widespread of which is Lyme disease, a bacterial infection.
“Lyme disease cases alone have increased roughly two- to threefold over the past 20 years,” Saggar said. Approximately 476,000 Americans are diagnosed and treated for Lyme disease each year, per CDC surveillance data.
MOSQUITO-BORN DENGUE FEVER CASES SURGE AT POPULAR US VACATION DESTINATION
Also common are anaplasmosis and ehrlichiosis, two different types of bacterial infections, according to the doctor. Tick bites can also cause babesiosis, a malaria-like parasitic disease that infects and destroys red blood cells.
“Another growing concern is alpha-gal syndrome, a condition in which a (lone star) tick bite triggers a serious allergic reaction to red meat,” Saggar said. “In rare cases, people have died from anaphylactic reactions linked to alpha-gal syndrome following a tick bite.”
Some common symptoms of tick-borne illness include fever, chills, fatigue, headaches, muscle aches and joint pain. (iStock)
Ticks can also transmit viruses, including the Powassan virus, which can cause severe neurologic injury.
“Powassan virus disease is arguably the most concerning emerging tick-borne infection,” said Goldberg, who is also chief medical officer at HealthTrack. “It’s transmitted by the same blacklegged tick that carries Lyme disease, but unlike Lyme, it can be transmitted within minutes of tick attachment.”
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Powassan can cause severe encephalitis with a roughly 10% to 15% fatality rate, and more than half of survivors have lasting neurological deficits, Goldberg noted.
In the Rocky Mountain states, the Rocky Mountain wood tick (Dermacentor andersoni) transmits Rocky Mountain spotted fever and Colorado tick fever.
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“In the Southeast and South-Central U.S., the lone star tick (Amblyomma americanum) drives a different set of concerns: ehrlichiosis, tularemia, and two emerging viral threats — Heartland virus and Bourbon virus,” said Goldberg.
Symptoms to watch for
Some common symptoms of tick-borne illness include fever, chills, fatigue, headaches, muscle aches and joint pain, according to Saggar.
Another sign is the classic “bull’s-eye” rash associated with Lyme disease, known medically as “erythema migrans.”
“If you think you have been bitten by a tick, you should seek medical attention if you develop symptoms after a known tick bite or after spending time in tick-prone areas, especially during the spring, summer and fall.” (iStock)
“Because testing can sometimes be falsely negative early in the disease process, doctors may treat patients based on symptoms and exposure history rather than waiting for laboratory confirmation,” Saggar noted.
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“If you think you have been bitten by a tick, you should seek medical attention if you develop symptoms after a known tick bite or after spending time in tick-prone areas, especially during the spring, summer and fall.”
Preventing tick bites
As there are no vaccines currently available for any tick-borne disease in the U.S., prevention is the most effective strategy.
Goldberg shared the following recommended prevention strategies.
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- Use EPA-approved repellents, including DEET, picaridin, IR3535 or oil of lemon eucalyptus on exposed skin. Treat clothing and gear with permethrin (a synthetic insecticide and repellent) or purchase pre-treated clothing.
- Wear light-colored clothing (to spot ticks more easily), long sleeves and long pants tucked into socks when in wooded or grassy areas.
- After spending time outdoors, check your entire body, paying special attention to the scalp, behind the ears, armpits, groin and behind the knees, the doctor advised. It’s also recommended to shower within two hours of coming indoors.
- Tumble-dry clothing on high heat for at least 10 minutes to kill any ticks on clothing.
- Remove ticks promptly and properly. Using fine-tipped tweezers, grasp the tick as close to the skin as possible, and pull upward with steady, even pressure. Clean the bite area afterward.
Approximately 476,000 Americans are diagnosed and treated for Lyme disease each year, per CDC data.
“The longer a tick is attached, the higher the risk of disease transmission — for Lyme disease, transmission generally requires at least 36 hours of attachment,” Goldberg said. “The Powassan virus can be transmitted much more quickly.”
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