Practical class: Human nerve-muscle preparation
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Contents
1. The Ulnar Nerve Practical
Aims
2. The experiments!
Determination of the threshold and maximal stimulus strengths
Determination of conduction velocity
Determination of the refractory period
Figures
Figure 1 - Plot of stimulus strength (measured in volts) against EMG response size (measured in mV)
Figure 2 - Data traces showing increasing latency for longer conduction distances
Figure 3 - Plot of latency (onset & peak) against distance between the stimulating and recording electrodes
Figure 4 - Data traces: paired pulses separated by different intervals
Figure 5 - Data traces: EMG response to second stimulus shown in isolation after subtraction of first response
Figure 6 - Plot of the amplitude of the second EMG response (as a percentage of the first pulse) against the interval between the two stimuli
Copyright © 1998 University of Bristol. All rights reserved.
Author:
Phil Langton
Last modified: 9 Dec 1999 08:21
Authored in
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