Blog 27- Experiment Graph

Figure 1: Results of Effects of sounds at different tempos, frequencies, and pitches on hear rate and blood pressure.

Conclusion:  Our thesis states that raising pitch, tempo, and volume of a certain sound will raise blood pressure and heart rate, while lower pitches, tempos, and volumes will lower heart rate and blood pressure.  This graph supports our thesis for the most part besides the variable of volume.  According to this graph volume does not have as much of an effect on heart rate and blood pressure as we had hypothesized.  However, our hypothesis of higher tempos and pitches was supported as the heart rates and blood pressures of our subjects rose, while lower tempos and slower pitches resulted in a lowering of blood pressure and heart rate.

Blog 26- Human Experiment Update

In our experiment so far it is a little early to tell if our hypothesis has been supported.  We have experimented on only five people which is not enough to guarantee that a pattern of a raise in heart rate and blood pressure based on frequency, pitch, and volume.  The data somewhat varies from person to person and it will be easier to draw conclusions about the data as we experiment on more subjects.  However, so far it is evident that the sounds that are faster paced have raised heart rate and blood pressure more frequently than the sounds with a slower pace.

Blog 25- Human Experiment Hypothesis and method

Hypothesis: Increasing the BPM, pitch, and volume of a sound will induce stress on the heart, and will cause a spike in heart rate in blood pressure while lowering the BPM, pitch, and volume will lower the heart rate and blood pressure as it comes the heart.


Method: We will run our tests in the music practice room as they are the most quiet rooms on campus.  First we will place identical headphones on a group of people.  We will measure their starting heart rates and blood pressures and record them.  After each sound we will record their heart rate and blood pressure to measure how the sound affected those elements.  They will get about a 2-3 minute rest between each set of sound to make sure their heart rate gets down to the normal resting level.  Next we will play them their first sounds; all sounds last a duration of 7 seconds; [very slow-high [4186 Hz]- high[70dB]] after that we will record their blood pressure and heart rate again and give them about a two minute rest.  Then we will play the second sound [very slow- low[20Hz] - low [30dB] and repeat the recording of blood pressure and heart rate and give the subject another rest. Next we will play them the third sound [very slow- high-[4186Hz] - low [30dB], then record and rest.  Then we will play them the fourth sound [very slow- low[20Hz] -high[30dB].  Then record and rest.  We will then play them the fifth sound [extremely fast- high[4186Hz] - high [70dB], and then record and rest.  Next the sixth sound [extremely fast- low[20Hz]-low[30dB]], and then again record and rest. Next the seventh sound [extremely fast-high[4186Hz] - low[30dB]], and again record and rest.  The last sound we will play for them is [extremely fast- low[20Hz]-high[70db], and we will record the final heart rate and blood pressure.  After we finish all the tests on all the subjects we need to do we will compare our data, make conclusions, and see if our hypothesis was supported.

Blog 24 - Experiments Brainstorm

Experiment 1:  Giving up a certain food group that is part of your regular diet

Hypothesis:
How and why it would change

Method:
Restrict some element of a group of people's diets [daiy,gluten, etc] and see how it affects different parts of your body [weight, blood pressure, heart rate, etc.]


Experiment 2: To test flexibility improvements

Hypothesis:  If someone stretches multiple times a day their flexibility will increase faster than someone who stretches more than once or not at all in one day.


Method:  Get together a group of people and have someone stretch 1 time a day, another twice, and another 3 times, and another not at all.  We will measure how their flexibility has changed over a set period of time and see if it affects other elements of the body [such as strength]

Blog 22

There are a few things that could have caused error in our experiment.  One is that it is possible that other germs and bacteria other than E. Coli could have gotten into our petri dishes.  This could cause our data to have errors because the other organisms could have altered the antibiotic resistance.  Also because the amount of other organisms that got into the petri dishes could have varied from petri dish to petri dish, the data would not necessarily be uniform.  Another error could be within the E. Coli itself.  It is possible that in some of the samples some of the E. Coli may not have actually been alive.  If one petri dish had more alive E. Coli than another petri dish, the data created may not be completely accurate. Also the agar could not have been the exact same consistencies in every petri dish.  When the agar was poured it may thicken in different areas and have different consistencies when it cooled, which would make every dish not completely uniform which could have an effect on the results.  Another could be the temperature that the E. Coli was living in.  Even if the degree difference was small each day it still could have had an affect on how the E. Coli survived and colonized.

Blog 21

Our experiment tests E. Coli's resistance to antibiotics.  We are trying to figure how quickly it dies depending on how much antibiotic different samples are given.  This research is significant because it can test the effectiveness of antibiotics on certain bacteria.  The research we are doing is similar to those who are trying to find new medicines/antibiotics that can be used to kill the bacteria in our body.  Also one issue doctors have with antibiotics is our body can build up resistance to them if they have been used too many times and are no longer able to fight off the bacteria in the human body.  So by doing this research, we are researching how much the certain type of bacteria, E.Coli, can build up resistance to certain amounts of the antibiotic ampicillin.  We are trying to figure out how much ampicillin it takes to kill off the bacteria and how it can build up resistance to it.  Similar to how if you get the bacteria in your body that creates strept throat and how if you get it enough times and take the antibiotics enough times, the antibiotic no longer is capable of killing off that bacteria in your body because it has built up resistance to it.

Blog 20

So far, our experiment did not go exactly the way we had planned so we do not have any actual data.  We moved colonies that had formed into two different types of petri dishes, one with just agar, and the other with agar as well as ampicillin.  However, there was no visible difference between the two so we could not take any data.  In attempt to fix this issue we added a couple drops of ampicillin to the petri dishes to see if their is any new visible difference in the e.coli colonies.  We are going to check back tomorrow to see how they have formed and see if there was any resistance to the ampicillin created by the e. coli colonies.