To win election, let voters move the right hand?

The difference of the sound you hear depends on which hand you are focusing on.

This finding may help patients with better stroke communication and improve the language recognition of children with dyslexia.

Researchers at Georgetown University in New Orleans (USA) have linked motor and cognitive skills by pointing out how the left hemisphere and the right brain hear.

Dr. Peter Turkeltaub's team has gradually changed the vocals when there are still lots of noise around and asked 24 volunteers to hear the sound, press the button.

Dr Turkeltaub said: "The study subjects used their right hand to respond in the first 20 seconds, using the left hand for 20 seconds later and so on."

When the subject uses the right hand, they hear a lot of sounds changing more quickly.

The results of the test showed that when the subject used his right hand, they heard many sounds changing more quickly when using the left hand.

'Because the left hemisphere controls the right hand and vice versa, these results prove that the two hemispheres specialize in different types of sounds' , Dr. Turkeltaub added.

'The left hemisphere is responsible for the rapidly changing sounds, such as consonants, and the right hemisphere is responsible for slow-changing sounds like syllables or intonation.

This result also shows a great interaction between motor and cognitive organs. Researchers say if you wave a flag when you hear one of the presidential candidates speak, the speech will sound slightly different, depending on which hand you use.