The meaning of hearing and feeling noise

About a year and a half after the stroke, a 36-year-old female professor began to feel the vibrations of sound. The charismatic voice of the Announcer on the radio gave her a feeling of excitement. In contrast, the noise inside the plane made her feel physically uncomfortable.

Now, Tony Ro, a neurologist, works at New York City College and CUNY University and College Center of the University of New York City, USA, has found the cause. feeling of this combination. Detailed images of brain scans revealed: The appearance of new connections between the area of ​​the brain responsible for sound processing and the cortex that governs the sense of touch keeps the task of handling vibrations.

Listening and sensing sounds based on the nerve settings generated by vibrations (Artwork: Blogspot)

" The auditory region in the brain of the female professor began taking over the cortex that governed the sense of touch, " said Tony Ro, who used brain imaging details, focusing on the connecting nerve and medullary tissue in the brain to detect changes.

Similarly, the connection between hearing and sound perception has affected all of us, The results of the study were presented at the meeting of the American Society of Acoustics, on May 25, 2011, by Tony Ro and colleagues. Scientists point out that: We hear and perceive sound based on the neural settings generated by vibrations . For example, when you set up your mobile phone in vibrate mode, you can feel the vibration through your hand skin, and the ringing of your phone when someone calls, creating sound waves, spreading through the vibration of the air, moving to the eardrum.

Elizabeth Courtenay Wilson, neurologist, working at Beth Israel Medical Aid Center, in Boston, USA, who did not attend the meeting of the American Society of Acoustics, also found strong connections between areas of the brain that control hearing and sound induction. " We think that hearing with the ear, and hearing through the skin makes it easier to analyze and tune the sound frequency ," Wilson said.

Wilson earned his doctorate in science, through his research work at an MIT lab, whether the vibrations felt through the skin work to increase the sound performance of human ears. She published a series of documents, proving that in people with normal, healthy hearing, they will hear better when there is a combination of very weak sounds and extremely weak vibrations that affect skin, compared to just hearing with the ear or just hearing the sound through the skin.

Other researchers have shown that: Listening to a sound can increase the sensitivity of touch . Tony Ro calls this mosquito's humming effect: The skin senses vibrations caused by the humming of mosquitoes. The frequencies of sounds and vibrations must be appropriate for the skin to sense, according to a Ro article, published in 2009 in brain experimental research.

Frequency may be a two-way street in the brain, combining both senses, according to Jeffrey Yau, neurologist, working at Johns Hopkins University School of Medicine in Baltimore, USA. Vibrations with a high or lower frequency sound, Jeffrey Yau discovered, tend to distort the perception of the pitch up or down of the sound. Sound can also affect, though the shock has been perceived.

The ability to sense skin vibrations and ears' hearing is easy to confuse in determining volume, Yau said at the meeting. Drivers always listen to music with a higher volume of sound than their passengers because of the steering wheel vibration.

" When you create a stronger vibration will make the listener feel louder ," Yau said. Sound, on the other hand, doesn't seem to change when you feel intense vibrations with great intensity.

Imaging The MRI (magnetic resonance) scan of people's brains has shown that the auditory region can be activated when there is vibration , and some speculate that parts of the brain specialized to read frequencies Can play a signaling role. But, it is difficult to understand exactly where the two senses sensing vibrations and hearing sounds met in the brain, is still a mystery.