256 Information Storage and Neural Control 



AVERAGE RESPONSE OF VISUAL CORTEX 



4cps AFTER AVOIDANCE 

 TRAINING 



DARK PERIOD 



B. 



DURING GENERALIZATION 

 lOcps AFTER TRAINING TO 

 4cps 



lOcps ON 



lOOms 



1/ 



DARK PERIOD 



c. 



lOcps AFTER DIFFERENTIATION 



Ocps ON 



V 



, lOOms 



I — 1 



DARK PERIOD 



100 SWEEPS 



iOO SWEEPS 



100 SWEEPS 



CALCULATION OF B. FROM 

 C+A AND C-A 



26 ms ^ ., 



GENERALIZATION WAVEFORM 



o- — oCALCULATED WAVEFORM 



0=10 + 4 •=10-4 



Fig. 8. Average response computed from visual cortex: (A) In response to four 

 per second flicker after avoidance training using a four per second flicker tracer 

 conditioned stimulus. (B)During generalization to ten per second flicker. (C) 

 In response to ten per second flicker after difTerentiation training. (D) Com- 

 parison of generalization waveform with calculated interference pattern. (A, B, C 

 from Marc Weiss: Unpublished data.) 



quency used during training" and the exogenously derived neural 

 response to the new stimulus eliciting generalization. Therefore, I 

 explored the interference patterns which could be constructed by 

 algebraic addition or subtraction of the waveforms (Figs. 8A and 



