Comparisons between Reflex Inliibition and Reflex Excitation 77 



a depression of the motoneurone's discharging activity ; the second appears 

 as the supervention of a state in which, although there is no further 

 depression, there is no restitution, or only a very slow one, of the moto- 



neurone's previous discharge. In the tirst part or period of the etlect 

 central inhibition is active ; but nothing appears to indicate that it is active 

 in the second. In such summations as that of fig. 8, the summation can be 

 explained without supposing tliat tlie process of central inhibition due to 



