216 



Dr. A. D. Waller. The Galvanometric 



But atropin (atropin, four trials by local application of liq. atropise, 

 followed by a belladonna plaster for 24 hours) was found not to affect the 

 skin response. 



The application of an iudiarubber band rendering the limb pulseless and 

 ex-sanguine did not appreciably affect the emotive response. 



The most remarkable fact is the response to an idea. In this connection it 



Fig. 1. — The emotive response in this instance has a resistance value of 4000 ohms 

 {i.e., a fall of E from 12,000 to 8000, or a rise of conductivity on the record of about 

 '20 mm. = about 40 y, i.e., 0-000040 mho). 



At the point marked X the subject raised the little tingei-, causing a rise of the 

 myograph lever and a momentary increase of resistance in the circuit. 



The emotive effect of the idea aroused in the subject in response to the sentence 

 " Pensez a la Belgique " was far more permanent than that shovs^n in fig. 2, in 

 which the exciting idea was aroused by the phrase " Pensez aux Gothas." The 

 subject, G. de D., is a Belgian lady, who was an eye-witness of episodes in the 

 German occupation of Belgium in 1914. 



is further remarkable that the most effective ideas are such as are accom- 

 panied by disagi'eeable or painful emotion. The threat of a burn is often 

 more effective than the bum itself. 



Lighting a match may give a larger effect than the application of a match 

 to the free hand. 



The apprehension of a bad smell that has just been experienced has 

 proved to be particularly effective. 



The expected prick of a needle has produced more effect than an unexpected 

 prick. 



