the first four frames, whereas in the "safe" swallow the bolus doesn't arrive at the ramus

until the twelfth frame.

Table 3-12. Order of swallow events and hyoid trajectory measurements for "unsafe
 swallow".
Swallow Event Frame No. Angle Displacement Velocity
Onset Bolus Transit 1 0.306 2.165 72.177
Palatal onset 2 1.586 -0.252 80.583
Bolus head at ramus 4 0.790 -1.630 34.430
UES opening 11 4.772 2.721 105.261
Max Laryngeal Closure 18 7.567 6.332 18.484
UES closing 23 5.487 5.425 31.386
Palatal offset 26 7.500 0.923 44.175


 Angle vs time
-r -- -- r -- -t


200 400 600 800
 Time in rriliseconds


1000 1200


Figure 3-4. Figure depicting the angle of the hyoid in degrees and the relationship to the
 defined swallow events in the "safe swallow". Swallow events are labeled
 with asterisks.