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Bio103

In: Science

Submitted By Sunshine918
Words 1278
Pages 6
Alyson Harvey
Kent Schnacke
September 5, 2015
Life 103 Lab Heart Rate and Blood Pressure in Relation to Scary Video Stimulation
Introduction:
There are many events known to increase blood pressure, including exercise, getting excited or frightened etc., which is the pressure of blood on the walls of blood vessels, measured in systolic and diastolic pressure (mmHg), and heart rate, which is the rate of the relaxation and contraction phases of the heart (BPM). (Weedman 2015.) Whether it be scary movies, extensive exercise, or as researchers conducted in one experiment, they related increased blood pressure and heart rate to air travel and air pressure, and those being one of the main reasons medical emergencies on airplanes occur. They concluded that heart rate and blood pressure increased nearly 18%, when air pressure was changed. (Turner, Brandon E. et al. 2015). We are testing the fluctuations within heart rate and blood pressure in accordance to watching a short scary video. The hypothesis we are testing is that blood pressure and heart rate will change after watching a scary video. The null hypothesis is that no change in heart rate and blood pressure will occur. The results of this experiment are significant in relation to why hearts seem to race after a video that has something pop out at you and startle you.
Materials and Methods:
To measure heart rate and blood pressure, we used a machine called sphygmomanometer. (Weedman 2015.)The independent variable is defined as the scary video provided. The dependent variables are the fluctuation in heart rate and blood pressure observed.
One section of the class got the sphygmomanometer ready to observe their partners, while their partners watched the scary video provided. First they got their partners basal readings. Immediately after watching the video, they took the blood pressure and heart rate readings,…...

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