The 10 annoying sounds and why they bother us

The 10 Most Annoying Sounds 20 35=43 19+2 19+25=43 Knife on a glass 2. Fork on a plate 3. Chalk on a blackbord 4. Ruler on a glass 5=43 19+2e 19+25 13 Why they Bother US 5. Nails on a blackbord 6. Fork on a plate 7. Disc Grinder Amygdala When listeners heard an annoying sound, activity in the amygdala increased and took over regulation of the auditory part of the 8. Bycycle braking 9. Baby crying brain. *Q Study shows 8000 Hz 7000 Hz 6000 Hz that sounds in the Cause 5000 Hz higher-frequency - range of around 2,000 to 5,000 Hz were rated Fear 4000 Hz 3000 Hz Anger Anxious 2000 Hz 10. Electric drilI 1000 Hz as most unpleasant. Souces: http://www.webmd.com/brain/news/20121012/10-most-annoying-sounds http://www.guokr.com/article/60335/