Are These The World's Most Annoying Sounds?

By Meera Dolasia on October 15, 2012

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What is the most unpleasant sounds to the human ear? That, was the big scientific mystery that researchers at the Welcome Trust Center for Neuroimaging at UCL and Newcastle University in England, wished to solve. So, they recruited a group of 13 people and subjected them to 74 different noises that we encounter in our everyday lives.

In order to make the results as objective and unbiased as possible, they determined the reactions, not by the listeners' expressions but by measuring their brain activity with an MRI scanner. What they discovered was that while sounds are normally processed in the brain's auditory cortex, unpleasant sounds - identified as those with a frequency of between 2,000 and 5,000 Hz - seem to activate the amygdala neurons that aid in processing emotions, making us more sensitive to that particular noise, which is why we consider it irritating or pleasing depending on what it is.

The study which was led by Dr. Sukbiner Kuman was conducted to better understand how the human brain reacts to different sound decimals, which will in turn aid scientists to better understand medical conditions like migraines or autism, where the sufferers are very sensitive to noise.

So what are the sounds that make our hair stand? Here, are the top five as revealed by the scientists in a report published in the Journal of Science earlier this month. What will probably come as a surprise (or maybe not), is that two of them are noises most of you encounter on a regular basis.

In case you are wondering, the sound that the 13 people found most pleasant was that of bubbling water! Did you find the noises as annoying? If not, be sure to let us know what noises irritate you the most, by adding your comments below.

Resources: Telegraph.co.uk, popsci.com

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812 Comments
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  • iamahero
    iamaheroThursday, May 25, 2017 at 8:53 am
    I hate when people scrape their nails on chalkboards.πŸ˜‘πŸ˜–
    • memeThursday, May 18, 2017 at 11:26 am
      ....someone help
      • viniethThursday, May 4, 2017 at 7:56 am
        wow
        • rip headphone Tuesday, April 25, 2017 at 12:19 pm
          rip headphone users
          • bekahboo
            bekahbooThursday, April 20, 2017 at 7:16 am
            that was really annoying
            • A PersonThursday, April 6, 2017 at 6:18 am
              ouch, that hurt my ear :C
              • bananahead50
                bananahead50Thursday, March 30, 2017 at 7:46 am
                that hurt my ears
                • CJWednesday, March 22, 2017 at 5:32 am
                  thanks for all these nosies
                  • youcrackmirrors
                    youcrackmirrorsWednesday, February 1, 2017 at 4:38 pm
                    thanks world. now i can annoy my friends
                    • coolomgacool
                      coolomgacoolThursday, February 9, 2017 at 5:58 am
                      lol
                    • arjundebnath
                      arjundebnathTuesday, December 13, 2016 at 10:31 am
                      The person who sent this news was right. Just to say u are right about this being the most annoying sound ever!

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