Introduction to emg name: Kyle Loseff Group Names: Jeff, Peter, Kappers Table 1



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Introduction to EMG Name: Kyle Loseff

Group Names: Jeff, Peter, Kappers

Table 1

Table 1

Condition

Interval

Minimum mV

Maximum mV

mV

Jaw Clenching


0-5 s

1.2

1.27

.07

5-10 s

.58

1.83

1.25

Chewing soft object ( replace)


0-5 s

.63

1.7

1.07

Chewing interval

.33

1.7

1.37

Chewing hard object ( replace)


0-5 s

.56

1.75

1.19

Chewing interval

.20

2.14

1.94

Chewing medium object ( replace)


0-5 s

.33

1.82

1.49

Chewing interval

.29

1.97

1.68


Import graphs with descriptions


DATA ANALYSIS

1. Rank, in order (from greatest to least), the amplitude of EMG electrical activity for each of

the items tested: carrot, egg, chewing gum.

1. Combos 2. Gum 3. Marshmallow

2. Compare the frequency of muscle activation during mastication (chewing) of the three food

items tested. Is there a significant difference in the number of similar spikes generated during

a 5 s interval of data collection for each of the items tested?



No, the trends are all generally the same for all the cases.

3. Compare rates of chewing within your lab group/class. Are there significant differences?



No, class wide the rates are all similar but differ a little because of the different test subjects

4. On the basis of the findings in this experiment what recommendation would you make to a

friend with a temporomandibular disorder (TMD) regarding his/her food choices?

He should try and eat softer foods to avoid clenching his jaw and having to work so hard to break down his food

5. The “Iron Jaw Trick” is a popular circus act in which a performer (or two performers) hang

from a trapeze by his/her teeth. What exercises might someone do to strengthen the masseter

muscles of the jaw so that a trick of this type could be performed successfully?



The performers should practice jaw clenching and practice holding weights in their mouth until they reach the desired amount of weight

6. Chronic headaches and temperomandibular disorders (TMD) may be the result of



unconscious clenching of the jaw. What are some ways to reduce/prevent jaw clenching? To prevent jaw clenching, the kid should wear a mouth piece to bed


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