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Musicians' 'well-tuned' brains can identify emotion|
Washington | March 04, 2009 11:41:54 AM IST
Searching for a guy who understands even your most subtle emotional signs? Well, then find a musician, suggests a new study, which found that artists' brains are "well tuned" to identify emotions.
The Northwestern University study, which has been published in the latest issue of European Journal of Neuroscience, has provided biological evidence that musical training enhances an individual's ability to recognize emotion in sound.
"Quickly and accurately identifying emotion in sound is a skill that translates across all arenas, whether in the predator-infested jungle or in the classroom, boardroom or bedroom," says Dana Strait, primary author of the study.
Kraus, Northwestern's Hugh Knowles Professor of Communication Sciences and Neurobiology; Richard Ashley, associate professor of music cognition; and Auditory Neuroscience Laboratory manager Erika Skoe co-authored the study titled "Musical Experience and Neural Efficiency:
Effects of Training on Subcortical Processing of Vocal Expressions in Emotion."
The study found that the more years of musical experience musicians possessed and the earlier the age they began their music studies also increased their nervous systems' abilities to process emotion in sound.
"Scientists already know that emotion is carried less by the linguistic meaning of a word than by the way in which the sound is communicated," says Strait.
To reach the conclusion, the researchers measured brainstem processing of three acoustic correlates (pitch, timing and timbre) in musicians and non-musicians to a scientifically validated emotion sound. The musicians, who learn to use all their senses to practice and perform a musical piece, were found to have "finely tuned" auditory systems.
This fine-tuning appears to lend broad perceptual advantages to musicians.
"Previous research has indicated that musicians demonstrate greater sensitivity to the nuances of emotion in speech," says Ashley, who explores the link between emotion perception and musical experience.
The 30 right-handed men and women with and without music training in the study were between the ages of 19 and 35. Subjects with music training were grouped using two criteria-years of musical experience and onset age of training (before or after age 7).
Study participants were asked to watch a subtitled nature film to keep them entertained while they were hearing, through earphones, a 250-millisecond fragment of a distressed baby's cry.
Sensitivity to the sound, and in particular to the more complicated part of the sound that contributes most to its emotional content, was measured through scalp electrodes.
The results were not exactly what the researchers expected. They found that musicians' brainstems lock onto the complex part of the sound known to carry more emotional elements but de-emphasize the simpler (less emotion conveying) part of the sound. This was not the case in non-musicians.
In essence, musicians more economically and more quickly focus their neural resources on the important-in this case emotional-aspect of sound.
"That their brains respond more quickly and accurately than the brains of non-musicians is something we'd expect to translate into the perception of emotion in other settings," Strait says. (ANI)
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