182 



PSYCHOLOGICAL EFFECTS OF ALCOHOL. 



SUMMARY OF FINGER- MOVEMENT DATA. 



Summaries of the data on the reciprocal innervation of the finger are 

 given in tables 30 and 31. Table 30 gives the average number of 

 oscillations; table 31 gives the average differences between the first 

 and the succeeding periods of each session. In fable 30 the total 

 averages for the normal subjects show how uniform is the fatigue effect 

 even within the 6" periods of our experiments. The averages of the 



TABLE 30. Summary of the average number of reciprocal innwalwn* of the middle finger. 



C (12 c.c.) was used in the 12-hour experiments. 



normaljexperiments show that in the last 2" the performance fell off 

 0.6 per cent of the first 2". There are no exceptions to the rule among 

 the normal subjects. A similar fatigue process appears after alcohol. 

 But it is conspicuous that it is less than on normal days. After dose 

 A the last period of 2" differs from the first 2" by only 5.7 per cent. 

 After dose B the difference is 8 per cent. Without further knowledge 



