What happens to your heart rate when you hear different pitches of sound? Does it increase? Does it decrease? For my science project, I am going to measure people's heart rates while playing different pitches of sound.I chose this topic because I was wondering if when I listen to my music, my heart rate changes when the music changes pitch. I also wanted to see what impact a high-pitched sound would have on an older person as compared to a youner person. In other words, would screaming or other high-pitched noises affect my grandparent's heart rate? If the high-pitched noises affect my grandparent's heart rate, I could lower the pitch of my voice to make it more comfortable for my grandparents when they visit.
The heart rate is the number of times the heart beats per minute. "This bag of muscle filled with blood squeezes tirelessly once every second of your life to pump blood around your body." (The Human Body, 1997, p.16.) When the heart beats, the blood enters the right ventrical and the right atrium. It then travels to the capillaries in the lungs were it exchanges the carbon dioxide it contains for fresh oxygen. When the blood leaves the lungs, it enters the left chmber, goes throuh the aorta, into other arteries and gives the cells blood. This happens 60 per minute for the average person.
There are man different kinds of heart rate. You have your average heart rate, which is when you are exercising, your recovery heart rate, which is the time after you excersise and your resting heart rate, when you are at complete rest. You can measure your heart rate by using a heart rate monitor, placig two fingers on your palpitating artery, counting the pulses for fifteen seconds and multiplying by four or using a stethoscope and counting the pulses per minute.
Your heart rate depends on your level of fitness, the more fit you are the fewer beats it takes to pump blood to your body. Your heart rate also depends on your living/eating habits, your sleeping patterns and your stress levels. If you have a full bladder, are stressed and have not slept well recently, chances are your heart rate will be higher.
My hypothesis is that the majority of people's heart rates will increase when a high pitched sound is played because the sound is more penetrating and persistent than a low sound. Wehn noises are high pitched, I belive they cause stress and in mu research, I discovered that when a person is stressed, their heart rate increases.
In summary, I am trying to find out what happense to the heart rate when diferent pitches of sound are played.
Table of Contents Abstract Introductiion Procedure Results Conclusion Bibliography Acknowledgements Project Information
