1. Rank, in order (from greatest to least), the amplitude of EMG electrical activity for each of
the items tested: carrot, egg, chewing gum.
Chewing the bread crust had the greatest amplitude of EMG electrical activity, followed by the cough drop, and finally, the gun, which had the least EMG electrical activity.
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?
The number of spikes in the graphs are pretty much equivalent. The only difference is the amplitude of each spike in a 5 second interval.
3. Compare rates of chewing within your lab group/class. Are there significant differences?
Everyone chewed different foods, so not any results were the same. Also, some people chewed harder, or faster than others, who chewed a bit slower and with less force.
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?
If I had a friend with TMD, I would suggest that they eat softer foods, so that their jaws aren’t strained as much when they eat these foods.
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?
To perform this trick, I would suggest the person should eat a lot of hard and soft foods. This way, they can build up their jaw muscles in different ways so that their overall jaw strength was greater than the average Joe.
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?
In order to prevent jaw clenching, it is important to take multiple steps in order to prevent the clenching of the jaw at night. During the day, one should consistently chew gum. This allows the jaw to lessen the stimuli throughout the day. And one should also wear a mouthguard at night. Obviously this prevents the jaw from coming together while sleeping.