Science

WTF Fun Fact 12403 – Your Brain on Math

Mathematics is a strange beast. It uses our language, but it isn’t quite the same – our brains hear it entirely differently from everyday speech. For example: when we hear a sentence like “cats like warm milk,” our brains process that information mainly in the left hemisphere. Something like “eight plus one is nine,” though, will fire neurons in both.

A study published in the journal Current Biology took a closer look at how our brains process mathematics (as opposed to regular speech). While our brains process ordinary language in the left hemisphere, math triggers neurons in both hemispheres.

The neuroscientists from the Universities of Tübingen and Bonn said in an interview: “We found that different neurons fired during additions than during subtractions.”

Esther Kutter, a doctoral candidate involved with the research group, confirmed: “Even when we replaced the mathematical symbols with words, the effect remained the same. For example, when subjects were asked to calculate ‘5 and 3’, their addition neurons sprang back into action; whereas for ‘7 less 4,’ their subtraction neurons did.”

The lead author of the study Prof. Dr. Dr. Florian Mormann of the Department of Epileptology at University Hospital Bonn, remarked on the study’s significance: “This study marks an important step towards a better understanding of one of our most important symbolic abilities, namely calculating with numbers.” – WTF Fun Facts

Source: Math Neurons” Fire Differently Depending On Whether You Add Or Subtract — IFL Science

WTF Fun Fact 12402 – Self-Cleaning Fish

An experiment published in the journal PLOS Biology showed for the second time that fish could recognize themselves in the mirror. Scientists injected the cleaner fish (Labroides dimidiatus) with a substance that “tattooed” them with brown marks on their scales. When they spotted their reflections, they were triggered to try and scrape off the marks.

This goes far beyond simple mirror recognition. Fish mirror self-recognition (MSR) would give the creatures a characteristic only shared by two other creatures – humans and chimpanzees.

Previous research drew the same conclusions but was not conclusive since the sample size was small and not all of the fish exhibited the behavior. But the recent replication study remedied those inadequacies and added more evidence to the theory that fish are self-aware.

Not everyone is convinced, though. Some researchers are still skeptical that the behavior was not the result of self-awareness but rather a physical reaction to being tattooed by the scientists.

When interviewed by IFL Science, the lead researcher, Professor Masanori Kohda of Osaka City University, said, “During the long 50-year history of mirror tests of animals, this study is the first test that uses the mark to which the subject animals pay attention. Hence, this fish shows the highest passing rate for mark-test, exceeding that of chimpanzees, dolphins, and elephants.” – WTF Fun Facts

Source: Fish Cleaning Themselves In A Mirror May Have Just Demonstrated Self-Awareness — IFL Science

WTF Fun Fact 12397 – Beer Mustache

Men with mustaches and beards are losing an estimated 162,719 pints of beer in their facial hair every year, according to Guinness.

The brewery commissioned a scientific study and researchers found that quite a bit of beer was being wasted each year in the UK (and presumably around the world) – about £4.58 a year, they estimate. It has been humorously titled the “mustache tax.”

There are an estimated 92,370 drinkers with facial hair in the UK. Those men drink an average of 180 pints each a year. That makes the total cost of wasted suds around £423,070, or around $572K in US dollars.

According to The Guardian, “As the data was based on the average mustache surface area. Scientists were able to work out the amount of wastage depending on size, shape, and density.” – WTF Fun Facts

Source: Hairy topers ‘wasting Guinness’? — The Guardian