INFLUENCE OF INTENSITY OF STIMULUS 127 



The following table shows the effect of intensity of 

 stimulus on the latent period : — 



Table I. — Effect of Intensity of Stimulus on Latent Period. 



Fig. 77. — Constancy of latent period when stimulus is above maximal. 

 Lower record under stimulus 2 ; upper record under stimulus 5. 

 Recorder 100 D.V. 



It is thus seen that with the increase of the intensity 

 of stimulus there is a corresponding reduction of the latent 

 period. But it would appear from further experiments 

 that a limit is soon reached, when the stimulus begins 

 to be maximal. A further increase of the intensity of 

 stimulation above this point will have little or no effect 

 in reducing the latent period. This is shown in fig. 77, 

 which gives a pair of records taken with a vibrator having 



