EFFECT OF IRRITATION OF A POLARIZED NERVE. 

 EXPERIMENT 198. 



413 



It will be seen in tliis experiment that, wlien on one occasion dimin- 

 i.shed excitability of the nerve resulted from the applicatioii of the 

 descending' i^olarizating current to the nerve attached to anon -weighted 

 muscle, increased excitability was produced when the muscle was 

 weighted. Again, later, when ascending* polarization produced "paresis" 

 of the iierve, attaching a weight to the muscle sufficed to bring about 

 the opposite result. 



Weighting the muscle^ therefore^ influences the effect of imlarization on 

 the excitability of the nerve. 



