I heart MUSIC
Why do humans enjoy music? What is it about the brain that
makes sounds translate into pleasure and other emotions?
According to studies, music is sometimes called the "language of the
emotions." If you ask people why they listen to music, they most often say
it is for its emotional effects.
Some
CDs are geared to particular emotions. I you have one called "Classic
Weepies," a selection of instrumental pieces without words. It raises two
more questions: Why would someone want to listen to sad music? What is it about
musical instrument sounds that can make someone sad, or happy, or whatever?
Consider this case: You hear a song for the first time on a day
when something very special happens. Very likely, you will remember that day
whenever you hear that song again. That song and the events of the day are
associated with one another in your memory.
Here is another idea about why music causes emotions. By
listening to music, you develop expectations about what will happen next in the
music you are listening to - even if you have never heard it before. The idea
is that emotion is produced when the music violates your expectations. This can
cause surprise, frustration, amusement, wonder, excitement, sadness - a wide
range of emotions.
Finally, let us turn to the brain. Brain imaging techniques
(especially fMRI, which stands for functional magnetic resonance imaging) are
being used to discover which parts of the brain are responding when people
listen to music.
We are finding that many of the brain areas for music are the
same as those for hearing speech - although language areas tend to be stronger
in the left hemisphere, whereas music areas tend to be stronger in the right.
And - back to music and expectation and emotion. I recently did
an fMRI study looking for brain areas that respond to violations of musical
expectations. I compared normal melodies with the same melodies changed to have
some unexpected rhythms and notes. Areas in the secondary auditory cortex
responded much more strongly to the changed melodies. This suggests that
violations of musical expectations produce responses at early stages of
processing in the brain.
source: http://www.ccmr.cornell.edu/education/ask/?quid=769