Do Certain Sounds Enrage You? Neurologists May Know Why

iStock
iStock

If the sound of a co-worker repeatedly clicking his pen can send you into a flaming furor, take heart: You’re not being hypersensitive, and you’re not alone. Neurologists in the UK have spotted physical differences in the brains of people with this sound-related rage, although whether these differences are the cause or the result of the disorder remains to be seen. The scientists published their findings in the journal Current Biology.

The technical term for that noise-triggered irritation and rage is misophonia (“hatred of sound”). People who have it experience uncontrollable and intense negative emotions after hearing certain repetitive noises like chewing, lip-smacking, pen-clicking, and foot-tapping.

It’s a relatively new concept within the medical community, although people have been complaining of symptoms for a long time. To those who’ve never experienced misophonia, it may sound silly or made-up—which is what many doctors have concluded. Others have categorized it as a form of anxiety or obsessive-compulsive disorder.

The authors of the current paper wondered if the problem might not be psychological but neurological. They recruited 20 British adults with misophonia and 22 without, and gave them all questionnaires to gauge their responses to various noises. Then they put each participant inside MRI and fMRI machines and played them all sorts of noises, including the benign (a kettle whistling, rain), the universally unpleasant (a baby crying, someone screaming), and common misophonia triggers (breathing, chewing).

As the researchers suspected, the results for the two groups looked very different. People with misophonia had more myelin, or insulation, around the gray matter in their prefrontal cortex. They also showed abnormal connections between this cortex and the anterior insular cortex, which is involved in processing information and emotions.

Hearing the trigger noises caused a spike in activity in both cortices for people with misophonia. For people without it, activity only increased in the prefrontal cortex. The trigger sounds also provoked a clear stress response in people with misophonia. Their heart rates increased and they began sweating.

Lead researcher Sukhbinder Kumar is a neuroscientist at Newcastle University and University College London. He says his team’s research should reassure people with misophonia and validate the condition’s existence to their doctors.

“Patients with misophonia had strikingly similar clinical features, and yet the syndrome is not recognized in any of the current clinical diagnostic schemes,” he said in a statement. “This study demonstrates the critical brain changes as further evidence to convince a skeptical medical community that this is a genuine disorder."

It also suggests a possible way of treating the condition. “My hope is to identify the brain signature of the trigger sounds,” Kumar said. “Those signatures can be used for treatment such as for neuro-feedback, for example, where people can self-regulate their reactions by looking at what kind of brain activity is being produced."

You Can Now Go Inside Chernobyl’s Reactor 4 Control Room

bionerd23, YouTube
bionerd23, YouTube

The eerie interior of Chernobyl’s Reactor 4 control room, the site of the devastating nuclear explosion in 1986, is now officially open to tourists—as long as they’re willing to don full hazmat suits before entering and undergo two radiology tests upon exiting.

Gizmodo reports that the structure, which emits 40,000 times more radiation than any natural environment, is encased in what's called the New Safe Confinement, a 32,000-ton structure that seals the space off from its surroundings. All things considered, it seems like a jolly jaunt to these ruins might be ill-advised—but radiology tests are par for the course when it comes to visiting the exclusion zone, and even tour guides have said that they don’t usually reach dangerous levels of radiation on an annual basis.

Though souvenir opportunists have made off with most of the plastic switches on the machinery, the control room still contains original diagrams and wiring; and, according to Ruptly, it’s also been covered with an adhesive substance that prevents dust from forming.

The newly public attraction is part of a concerted effort by the Ukrainian government to rebrand what has historically been considered an internationally shameful chapter of the country's past.

“We must give this territory of Chernobyl a new life,” Ukraine's president Volodymyr Zelensky said in July. “Chernobyl is a unique place on the planet where nature revives after a global man-made disaster, where there is a real 'ghost town.' We have to show this place to the world: scientists, ecologists, historians, tourists."

It’s also an attempt to capitalize upon the tourism boom born from HBO’s wildly successful miniseries Chernobyl, which prompted a 35 percent spike in travel to the exclusion zone earlier this year. Zelensky’s administration, in addition to declaring the zone an official tourist destination, has worked to renovate paths, establish safe entry points and guidelines for visitors, and abolish the photo ban.

Prefer to enjoy Chernobyl’s chilling atmosphere without all the radioactivity? Check out these creepy photos from the comfort of your own couch.

[h/t Gizmodo]

Invasive Snakehead Fish That Can Breathe on Land Is Roaming Georgia

Mohd Fazlin Mohd Effendy Ooi, Flickr // CC BY 2.0
Mohd Fazlin Mohd Effendy Ooi, Flickr // CC BY 2.0

A fish recently found in Georgia has wildlife officials stirred up. In fact, they’re advising anyone who sees a northern snakehead to kill it on sight.

That death sentence might sound extreme, but there’s good reason for it. The northern snakehead, which can survive for brief periods on land and breathe air, is an invasive species in North America. With one specimen found in a privately owned pond in Gwinnett County, the state wants to take swift action to make certain the fish, which is native to East Asia, doesn’t continue to spread. Non-native species can upset local ecosystems by competing with native species for food and habitat.

The Georgia Department of Natural Resources’ Wildlife Resources Division is advising people who encounter the snakehead—a long, splotchy-brown fish that can reach 3 feet in length—to kill it and freeze it, then report the catch to the agency's fisheries office.

Wildlife authorities believe snakeheads wind up in non-native areas as a result of the aquarium trade or food industry. A snakehead was recently caught in southwestern Pennsylvania. The species has been spotted in 14 states.

[h/t CNN]

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