Cuban crickets, not weapon, heard by ill US diplomats: study

January 7, 2019
In late 2016, diplomats working at the US embassy in Havana—seen here in 2017—began reporting ear pain and other symptoms from an unidentified high-frequency noise

A noise heard by US diplomats in Cuba who suffered mysterious brain injuries came not from technological weapons but local crickets, a new study suggests.

In late 2016, US diplomats in Havana began to report ear pain and other symptoms from a high-frequency noise, leading Washington to withdraw half its embassy staff and to expel Cuban diplomats in retaliation.

But a study by two biologists assessed a purported recording of the noise and said it matched the mating song of the Indies short-tailed cricket found around the Caribbean.

The actual cause of the diplomats' ailments was outside the scope of the study, with the researchers not ruling out that the diplomats suffered a sonic attack at another point.

"While disconcerting, the mysterious sounds in Cuba are not physically dangerous and do not constitute a sonic attack," said the study by Alexander Stubbs, a at the University of California, Berkeley, and Fernando Montealegre-Zapata, a professor of sensory biology at the University of Lincoln in Britain.

"Our findings highlight the need for more rigorous research into the source of these ailments, including the potential psychogenic effects, as well as possible physiological explanations unrelated to sonic attacks," they wrote.

The researchers drew parallels to the 1981 yellow rain incident, when the United States accused the Soviet Union of deploying in Southeast Asia deadly chemical weapons—which some researchers later concluded to be droppings from bees.

In the Havana incident, the researchers studied a recording made by a US government employee that was sent to the US Navy for analysis and was later published by the Associated Press.

The researchers compared the recording with data from the Singing Insects of North America database run by University of Florida entomologist Thomas Walker, who found that the Indies short-tailed cricket had the fastest wing stroke rate of any known cricket that calls continuously.

The cricket's calling song matches the recording in "duration, pulse repetition rate, power spectrum, pulse rate stability, and oscillations per pulse," the study said.

The research was released last week and has not yet been peer-reviewed or published in an academic journal.

Around two dozen US diplomats and several Canadians reported dizziness, anxiety and mental fog—conditions that University of Pennsylvania researchers described as similar to concussions.

But other studies have dismissed the conclusion, with a paper in the International Journal of Social Psychiatry finding suspicious that no Cubans reported symptoms and theorizing about a mass hysteria.

The United States has not accused Cuba—with which former president Barack Obama normalized relations—of attacking the diplomats.

But President Donald Trump's administration has blamed Cuba for failing to protect them.

Explore further: Microwave weapon suspected in mystery attacks on US diplomats: report

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rrwillsj
not rated yet Jan 07, 2019
So, they were sweeping for the wrong bugs? In a tropical country, bugs abound!
First. I would check for a possible allergic reaction. The crickets & other bugs, maybe rodents or birds?

Maybe people reacting badly to chemical bug killers? Including the electrical & sonic type?

How reliable was the electrical supply? The ballasts of fluorescent lights can be noisy & smelly.

Maybe a mixture of fumes? Paint, moldy plaster, traffic fumes?

Noise & humidity from leaking water pipes & AC system? Including variations in air pressure?

I get a strong reaction iwith nose bleeds when exposed to dry powder carpet cleaner.

Mass hysteria would mask that there were different causes, resulting in different effects on different people with different susceptibilities.

My suspicion? Cuba's most valuable export are educated, trained, experienced medical professionals.

Those would have beefed up the VA & Obamacare systems. No profit in allowing that to happen!

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