Electroencephalography

DISCUSSION: Electroencephalography is the study of the electrical activities of the Brain
(Smith, E.J.,n.d.). The multitude of Action potentials that are generated in the
Brain are interpreted as waves and amplified by the machine. Our focus of study
had been the Beta waves. The hypothesis put forward by our team members
was as follows: LISTENING TO MUSIC INCREASES THE FREQUENCY OF BETA
WAVES MORE IN A MUSICIAN THAN ONE WHO IS NOT.
The logic behind our hypothesis was that a musician would be more
analytical and more responsive to the changes in tone and melody while
listening to the music. Beta waves, are normally produced by the Brain when the
subject is alert and aware of the surroundings, trying to remember or thinking
hard (The Measurement of Brain Waves, n.d.). Therefore, with higher degree of
mental activity, the frequency of the Beta waves would be more in the musician.
It was determined that there was indeed increase of the average frequency
of Beta waves in the musician while she was listening to music. The nonmusician while listening to music actually showed a decrease in the average 1 frequency of the same compared to her state of WITHOUT STIMULUS. This
proved our hypothesis was correct.
The REFLEX RESPONSE LOOP that produced the desired response had been
presented here (Neudauer,2015). We would like to compare and contrast our experiment with another
performed by our colleagues. Their Hypothesis was LISTENING TO HIGH TEMPO
MUSIC WILL INCREASE THE FREQUENCY OF BETA WAVES.
Points of similarity with our experiment:
A AUDITORY STIMULUS- in both cases, MUSIC
B The Subject was exposed to the stimulus alternating with periods of
relaxation similar to our case.
C Each phase of WITH and WITHOUT STIMULUS was one minute, again
same as ours.
D Three cycles were carried out for a total of six minutes, similar to ours.
E The predicted response was found to be correct as in our case.
The points of difference were as follows:
A In our case, the type of music was chosen to be Classical.
B There were two subjects, of which one was a musician.
C In our case, only the last wave of each one minute cycle was analyzed.
For them the last two waves of each phase were analyzed. 2 D The non-musician actually showed a decrease in the frequency of Beta
waves during listening to music. The results were similar for both experiments in keeping with the desired
response predicted from the Reflex-response loop. In our case, the subject being
a musician was found to be very much responsive to music. While hearing it, she
had tried to analyze the subtle changes in tone and melody, which had increased
the frequency of her Beta waves. In the other experiment, high tempo music
excites an individual, and this excitement had led to increased activity of the
brain and increase of the frequency of the Beta waves.
In our experiment, the Hypothesis was proved. We had kept the following
variables the same for both subjects- body position, type of music, duration of
exposure to stimulus and use of ear plugs along with eye mask to cut off
unwanted auditory and visual stimuli during the experiment. We would like to
try out the following changes to improve our experiment and data:
A Increase the number of cycles for each subject – this could intensify the
effect and produce a greater increase in the frequency of Beta waves.
Also, there is a possibility that the Subject gets bored listening to the 3 music and stops analyzing. This could actually decrease the frequency of
the Beta waves.
B Change of posture- usually we get relaxed more when we are in supine
posture. In sitting position, we would like to study the frequency without
stimulus and with stimulus.
C To keep the subjects more relaxed we could try out some relaxation
techniques like deep breathing before the start of the recording. If we would like to expand our experiment, these could be the following
suggestions:
A The type of music could be changed. Usually we prefer one or the other
kind. We could study the effects of different type of music on the
musician. The new hypothesis could be LISTENING TO HEAVY METAL
MUSIC INCREASES FREQUENCY OF BETA WAVES MORE THAN LISTENING
TO CLASSICAL MUSIC.
B We could study if there were any gender variations to the same type of
Music- here one subject would be male and the other a female. 4 In a well -funded laboratory, scientists could expand on the experiment
in the following ways:
A Comparing and contrasting the effects of recorded music and a live
orchestra- to study if there were any changes in the frequency of the Beta
waves.
B Try to study the effect of the same music at different times of the day- in
early morning when we are relaxed, then in the afternoon when we are
stressed out from work and at the end of the day when we are relieved of
the work load, but too tired to concentrate in music.
SUMMARY PARAGRAPH:
Our team had studied the effect of Music on the frequency of Beta
waves in two subjects-one, a musician and the other who was not. We had
predicted that the musician would be more analytical while trying to figure out
the changes in tone and melody while listening to the music. They were each
tested separately with alternate periods of relaxation and exposure to music.
Our hypothesis was proved to be correct when the Subject with expertise in
music showed greater increase in the frequency of Beta waves. 5 6

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