WASHINGTON (AP) ̵
mysterious and invisible attacks in Cuba have discovered the brain
abnormalities while looking for clues to explain the hearing,
vision, balance and memory damage, The Associated Press has
It is the most specific finding to date for physical damage,
showing that whatever it is that has harmed Americans, has led to
perceptible changes in their brains. The finding is also one of
several factors that fuel the growing skepticism that some kind of
sonic weapon was involved.
Medical tests revealed that embassy employees developed
changes in the tracts of white matter that allow different parts of the
the brain communicates, several US officials said, describing a
growing consensus held by university and government doctors
the investigation of the attacks. White matter acts like information
roads between brain cells.
Loud and mysterious sounds followed by hearing loss and ringing in the ears
it had led investigators to suspect "sonic attacks." But the officials
they are carefully avoiding that term now. The sounds may have been
the byproduct of something else that caused damage, said three US
officials informed about the investigation. They were not authorized
to discuss it publicly and demand anonymity.
Doctors, FBI investigators and US intelligence agencies. UU
spent months trying to put the puzzle together in Havana, where
USA UU says that 24 US government officials UU and spouses got sick
starting last year in homes and then in some hotels. The united
States refers to "specific attacks" but says it does not know
who is behind them Some employees of the Canadian Embassy also got sick.
Doctors still do not know how the victims ended up with the target
changes in the subject, nor how exactly those changes can be related to
Your symptoms. US officials did not say whether the changes
were found in the 24 patients.
But it has never been shown that acoustic waves alter the brain
tracts of white matter, said Elisa Konofagou, a biomedical
professor of engineering at Columbia University who is not involved
in the government investigation.
"I would be very surprised," said Konofagou, adding that
Ultrasound in the brain is frequently used in modern medicine.
"We never see problems in the white matter tract."
Cuba has firmly denied participation, and calls Trump
administration's assertions that US workers were targeted "deliberately
lies. "The new medical details can help the United States counteract the Havana problem.
complaint that Washington has not presented any evidence.
The case has engulfed the US medical community UU In uncarted
territory. Doctors are treating the symptoms like a new one,
disease never seen before. After extensive tests and tests
therapies, are developing the first protocols to detect cases
and identifies the best treatments, even when the FBI investigation
He strives to identify a culprit, the method and the motive.
Doctors who treat the victims did not speak with the PA, however, their
the findings are expected to be discussed in an article that is
presented to the Journal of the American Medical Association, USA. UU
Officers said. Doctors at the University of Miami and the
University of Pennsylvania that have treated the victims of Cuba are
writing it, with contributions from the medical unit of the State Department
and other government doctors.
But the article will not speculate on what technology it could have
injured the workers or who would have wanted to target the Americans
In Cuba. If researchers are closer to solving those
questions, your results will not be made public.
The AP reported for the first time in August that American workers reported the sounds
audible in parts of the rooms but inaudible just a few feet away –
unlike normal sound, which is scattered in all directions. Doctors
now they have reached a term for such incidents: "directional
acoustic phenomena ".
Most patients have recovered completely, some after rehabilitation and
another treatment, authorities said. Many are back at work. About
a quarter had symptoms that persisted for long periods or
Stay until this day.
Earlier this year, EE. UU He said the doctors found that the patients had
He suffered concussions, known as mild traumatic brain injury, but
they were not sure beyond what had happened in their brains.
Concussions are often diagnosed based solely on symptoms.
Studies have found two concussions and white matter lesions
War veterans from Iraq and Afghanistan who survived the explosions but had
No other physical damage. But those injuries were attributed
mainly to shock waves of explosions. There are no patients from Havana
reported explosions or blows to the head.
External medical experts said that when the patient sample is
so small, it is difficult to establish cause and effect.
"What you have to ask yourself every time you see something in a
exploration: is it due to the episode in question or was it something
pre-existing and not related to what happened? said Dr. Gerard
Gianoli, an ear and brain specialist in Louisiana.
While Cuba works to limit damage to its reputation and economy,
the government has produced television specials and an online summit on
your own investigation. The experts from Cuba have come to the conclusion that
The assertions of the Americans are scientifically impossible.
Cubans have urged the United States to disclose information about what
It is found. FBI investigators have spent months comparing cases
to identify which factors overlap.
US officials told the AP that investigators have now determined:
– The most frequently reported sound patients were
Sharp screech or metal grating. Less recalled a low tone
noise, like a buzz.
– Some were asleep and awakened by the sound, even when others
Sleeping in the same bed or room I did not hear anything.
– Vibrations sometimes accompanied the sound. Victims counted
The researchers felt similar to the rapid flutter of air when
the windows of a car are partially rolled.
– The worst knew immediately that something was affecting their
bodies. Some developed visual symptoms within 24 hours, including
problems to focus on the screen of a computer.
The United States has not identified any specific precautions that it believes
can mitigate the risk for diplomats in Havana, three officials
He said, although an attack has not been reported since the end of August.
Since the Americans began to get sick last year, the State
The department has adopted a new protocol for workers before they leave
to Cuba that includes blood tests and other "reference" tests. Yes
Then they show symptoms, doctors can re-evaluate and compare.
Doctors still do not know the long-term medical consequences and
hope that epidemiologists, who track disease patterns in
populations, will monitor the 24 Americans for life.
Consultations with the Centers for Disease Control and Prevention
they are running.
AP medical writer Lauran Neergaard contributed to this report.
Reach Josh Lederman on Twitter at
http://twitter.com/joshledermanAP. Follow the AP coverage of
the attacks on Cuba http://apnews.com/tag/CubaHealthMystery