From the end of 2016, some US government officials based in Havana, Cuba, reported something strange: they heard loud noises from one direction.
The source of these sounds is still a mystery. Even stranger: The strange sounds seemed to make the staff physically ill – with symptoms ranging from hearing loss and dizziness to severe headache.
A new analysis, published Tuesday in the journal JAMA found that the incident – often referred to in the media as "Cuban sonic attack" – may have led to changes in the victim's brain ,
The research team found different "neuro-imaging findings" between control groups and those exposed to the attacks when scanning the brain, using three different imaging modalities.
The results include "significant differences" in white matter volume in many patients, as well as lower functional connectivity in the auditory and visual areas of the brain.
The team, led by Ragini Verma, Ph.D. student at the Department of Radiology at the University of Pennsylvania, noted that the results must be taken with a grain of salt and the relevance of the differences "may require further investigation".
One important caveat: The team had no access to brain scans before being exposed to phenomena for comparison.
According to the BBC, the study was carried out immediately by Cuban scientists. Leading Cuban scholar Mitchell Valdés-Sosa told the BBC: "The changes in the brain images are very small, very diverse and very diffuse, and they do not correspond to any coherent explanation."
Scientists have been trying to figure out what's behind "Havana Syndrome" since the first reports surfaced in August 201
According to a separate study from 2018, diplomats had "moderate to severe sensorineural hearing loss" and "persistent sleep disturbances" as a result of exposure to "hearing and sensory phenomena."
A smoking weapon has never been found. There followed a media hype of conspiracy theories, some of which suggested that the event involved the use of a sonic or microwave weapon.
The Associated Press even received a record of strange noises the employees heard, but they never helped the investigation
The Embassy in Havana reopened in August 2015 after being closed for more than 50 years – an important turning point in relations between the two countries.
However, the US has not publicly expressed its own theory The relations between Cuba and the US have failed as a result of the alleged attacks.
This article was originally published by Futurism. Read the original article.