X CONTENTS 



Page 



clamp Double clamp Make and break induction 

 currents as stimuli Extra currents at opening and 

 closing of primary current Tetanizing currents In- 

 duction in nerves Exclusion of make or break current. 

 UNIPOLAR INDUCTION 71 



in 



THE GRAPHIC METHOD 



THE GRAPHIC METHOD 77 



Kymograph Long paper kymograph. Light muscle 

 lever Writing lever Tuning fork. 



IV 



THE ELECTRICAU STIMULATION OF MUSCLE AND NERVE 



THE GALVANIC CURRENT 93 



Non-polarizable electrodes Moist chamber Destruc- 

 tion of the brain by pithing Paralysis of voluntary 

 motion by curare Opening and closing contraction 

 Changes in intensity of stimulus. 

 POLAR STIMULATION OF MUSCLE 101 



Ureter Gaskell Clamp Intestine Electro-magnetic 

 signal Tonic contraction Physiological anode and 

 cathode Polar stimulation in heart. 



PofcAR STIMULATION OF NERVE ........ 113 



Law of contraction Changes in irritability Changes in 

 conductivity. 



STIMULATION OF HUMAN NERVES 127 



Stimulation of motor points Polar stimulation of human 

 nerves Brass electrodes Reaction of degeneration. 



GALVANOTROPISM 137 



Paramecium. 



INFLUENCE OF DURATION OF STIMULUS . . . . . 138 



Tonic contraction Rhythmic contraction Continuous 

 galvanic stimulation of nerve may cause periodic dis- 



