Posted 10 October 2012 - 12:56 PM
I'm surprised this study didn't go further. Maybe it did, and they didn't get into it in the article.
There was a similar study many years ago that compared similar sounds, such as nails on a blackboard, to the distress and danger calls from rhesus and other monkeys. It was found the monkeys calls triggered similar responses in our brains.
It was theorized that perhaps the sounds of these distress calls which are designed to trigger survival instincts in monkeys, may be similar to our own ancient calls in the same circumstances.
Human responses included strong feelings of anxiety, adrenalin surges, and increase heartrate, blood pressure, perspiration and respiration.
At the heart of science is an essential balance between two seemingly contradictory attitudes--an openness to new ideas, no matter how bizarre or counterintuitive they may be, and the most ruthless skeptical scrutiny of all ideas, old and new.
This is how deep truths are winnowed from deep nonsense. -- Carl Sagan