In recent years, American and Canadian diplomats in Cuba have been targeted with mysterious "sonic rays" (edit: actually there is no evidence that they were intentionally subjects to sonic rays). The attacks have caused the brains of the diplomats to shrink, according to a paper just published in The Journal of the American Medical Association.
From The Telegraph:
Scientists at the University of Pennsylvania noticed the whole white matter volume – areas of the central nervous system that affects learning – of the diplomats was roughly five percent smaller than usual.
Meanwhile the functional connectivity in the auditory network was down approximately 15 percent.
Dr Douglas Smith, who took part in the analysis, likened the neurological effects on some of the patients as an "electricity brown-out".
"These types of changes are completely unknown to us," he told The Daily Telegraph.
"We haven't seen anything like it before and it's very curious. What it is, we're not sure, but there does appear to be something there."
Dr Smith disclosed that while some of the patients have recovered, others still struggling with their symptoms.