NERVOUS DISCHARGES 35 



it, as in a nervous system, we find that as a result of individual 

 experience, changes take place so that with the same sig- 

 nals as before the responses have changed and vice versa we 

 find the same responses when the signals have changed. 

 We have a mechanism that can be trained, that can acquire 

 habits, that will move either forward or back at a given signal 

 according to experience, that will make one, two or three re- 

 sponses to a given signal according to experience. 



In other words we have shown a practical arrangement of 

 mechanical transmitters and receivers that will respond to sig- 

 nals and control movements like a nervous system and that 

 possesses associative memory as it can learn by experience. 

 For, quoting Dr. Loeb again, "If an animal can be trained, if 

 it can learn, it possesses associative memory." 



