If this does not result in a visible reflex aim toward othe areas of the tendon

If this does not result in a visible reflex aim

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mark on the subject’s tendon. If this does not result in a visible reflex, aim toward other areas of the tendon until the reflex is obtained.d.After 5 or 6 successful reflexes have been obtained, have the subject reinforcethe reflex by hooking together his/her flexed fingers and pulling apart at chest level, with elbows extending outward (see Figure 7).e.Continue obtaining reflexes until data collection is completed at 30 s. A total of 10–15 reflexes should appear on the graph.16.Determine the minimum, maximum, and ∆yfor the depolarization events in this run. a.Tap and drag across the EMG graph to select the first area of increased amplitude (depolarization) in this run (see Figure 8).b.Choose Zoom in from the Graph menu and ensure that you have selected an area of data that represents the first area of increased amplitude (depolarization).c.Choose Statistics Potential from the Analyze menu.d.Record the minimum and maximum for this depolarization in Table 3, rounding to the nearest 0.01 mV.e.Determine and record the ∆yvalue (amplitude).f.Choose Statistics from the Analyze menu to turn off statistics.g.Choose Auto Scale Once from the Graph menu. 17.Repeat this process for each of five unreinforced and five reinforceddepolarization events, using the Accelerometer to identify each primary reflex. Ignore rebound responses. Record
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the appropriate values in Table 3.18.Determine the average amplitude of the reinforcedand unreinforceddepolarization events examined. Record these values in Table 3. R ESULTS Table 1 Kick 1 Kick 2 Kick 3 Kick 4 Kick 5 Average Time of muscle contraction (s) 11.76 14.42 21.02 23.93 26.87 19.6 Time of stimulus (s) 11.01 14.30 20.67 23.75 26.71 19.3 t (s) .75 .12 .35 .18 .16 .31 Table 2 Reflex 1 Reflex 2 Reflex 3 Reflex 4 Reflex 5 Average Time of muscle contraction (s) 7.2 10.84 16.59 19.74 22.19 15.3 Time of stimulus (s) 7.2 10.7 16.57 19.64 22.10 15.3 t (s) 0 .14 .02 .1 .09 .07 Table 3 Reflex without reinforcement Reflex with reinforcement Reflex response Max (mV) Min (mV) mV Max (mV) Min (mV) mV 1 .393 .029 .364 1.330 .022 1.308 2 .718 .034 .684 1.664 .028 1.636 3 1.191 .029 1.162 1.034 .025 1.009 4 .824 .028 .796 1.266 .030 1.236 5 1.975 .023 1.952 .297 .022 .275 Average values 1.02 .029 .9916 1.12 .025 1.093
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D ISCUSSION
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