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effect of fear on blood pressure and heart rate

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Simon Hassoun

on 6 May 2013

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Transcript of effect of fear on blood pressure and heart rate

Effect of Fear on Blood Pressure and Heart Rate by: Simon Hassoun
James Cressaty
Thomas Resendes
Shahaz Nabil Rahman What is Fear? triggered by the Objective: What is blood pressure? Materials: What is Heart Rate? the maze game According to the online oxford dictionary, fear is an unpleasant emotion caused by the threat of danger, pain, or harm. Heart rate is determined by the number of heartbeats per unit of time, typically expressed as beats per minute (BPM), it can vary with as the body's need for oxygen changes, such as during exercise or sleep. 1- blood pressure and pulse monitor
2- Laptop
3- scary maze game
(source: http://thescarygames.org/the-scary-maze-game/)
4- Timer
5- Human Participants It is an emotion induced by a perceived threat, and is considered to be a basic survival mechanism. Walter Bradford Cannon introduced the term "fight-or-flight response," which is the psychological reaction animals have when met with fear. Autonomic Nervous System Parasympathetic Nervous System Rest and Digest Sympathetic Nervous System Fight-or-Flight Response Our goal for this experiment is to determine whether fear has an affect on a person's blood pressure and heart rate Hypothesis: As a subject's level of fear increases, their heart rate and blood pressure will increase as well. Average Heart Rate: 60-100 BPM Blood pressure is the force of blood against the walls of arteries. Blood pressure is recorded as two numbers—the systolic pressure (as the heart beats) over the diastolic pressure (as the heart relaxes between beats). The measurement is written one above or before the other, with the systolic number on top and the diastolic number on the bottom. Average Blood Pressure 120/80 Procedures: participants were asked to play the maze game in an empty classroom (not knowing that it's a scary game).
prior to the game, the participants were allowed to sit for 2-3 minutes, afterwhich their resting bloodpressure and heart rate were measured.
participants then play the maze game.
as soon as the scary scene happens, the participants' bloodpressure and heart rate are measured again. Systolic Blood Pressure Diastolic Blood Pressure Heart Rate Discussion Based on our results, most of the participants experienced a slight increase in blood pressure and heart rate after playing the game.
An increase in heart rate is expected when the participants are scared as the increased breathing rates will allow the blood to deliver more oxygen to the muscles.

This, in turn, affects the the blood pressure since the pressure in the arteries increases as well. Some Sources of Error measurement techniques (after the participants were scared, it was hard to keep them still to measure their blood pressure efficiently)
less fear than anticipated in some of the participants
some people aleady knew the game; therefore making their results invalid. Conclusion Our results support our hypothesis positive correlation between fear and blood pressure and heart rate Thank you for your time
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