Tuesday, January 6, 2015

Introduction to EMG (a.k.a. chewing lab)

This lab involves different varietys of food. My group was given different foods to chew. Electrodes were placed on Alexis's face along with wires to monitor her chewing of each food. The minimum and maximum transmitted through the wires was recorded. Down below is the information gathered during this lab. The food that we found was the hardest to chew was the gummy worm and required larger bites. The food that was the easiest to chew was a nilla wafer. When it was being chewed, it showed little muscle activity or electrical energy. The numbers you will see below show the minimum and maximum voltage transmitted through her masseter.


  • Control- min: 0.9753mV max:1.131mV
  • Apple- min: 0.2962mV max: 2.281mV
  • Gummy Worm- min: 0.02083mV max: 4.006mV
  • Marshmellow- min: 0.0208mV max: 3.053mV
  • Nilla Wafers- min: 0.4115mV max: 1.924mV
  • Oreo- min: 0.1567mV max: 2.484mV


The graph below was made from sutracting the minimum from the maximum.


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