Figure 2: A normal subject's left and right average chewing pattern of gum chewing. The black line patterns represent the mean patterns of 500 normal subjects scaled in size to this individual for comparison. Note: This subject's average chewing pattern closely matches the mean normal patterns in the frontal, sagittal, horizontal and velocity views. The green vertical bars indicate that the vertical dimensions for these two examples are within 2 standard deviations of the mean normal value