260 Information Storage and Neural Control 



After Operant Conditioning to IO/5 "$<=', 6/s -5^ 



LG AA«'^,VWvVw''^*^i/^^ 1 



Fx ^''.A^^vv^^\AAV^\^4^f*^(^^M i 



10* ; , 



SIG W/WVVWVVWWVWWWWVWVWVVW/WWWWWVWV'JVW^ 



VH ^>/\^ht^\f^^/^j>f^^ I 



Correct 



FX \\\hY¥4^'^'*^^^^ 



s iG /vwwwv ;;;;M\/ww\/'//w'^vw/w\/'yw^AWM/vv;MWAVvvwwvMVWvwv^^ 



Error 



Fig. 10. 



MG — Medial geniculate 



VC— Visual cortex 



LG — Lateral geniculate 



FX — Fornix 



VH — Ventral hippocampus 



CL — Centralis lateralis 



MSS — Medial suprasylvian cortex 



Records obtained during differential approach conditioning (10 per second — S , 



6 per second — S^). (Top) Correct response to ten per second flicker. (Bottom) 



Error of omission to ten per second flicker. (From John, E. R. and Killam,K. F.: 



J. Nerv. Merit. Dis., 73/.-183-201, 1960.) 



The top records were taken during correct performance to ten 

 per second flicker. Note in particular the marked frequency- 

 specific response in fornix and centraHs lateralis. The bottom 

 records were obtained during an error of omission when the cat 

 failed to press the lever in response to the ten per second signal. Note 

 the diminished ten per second labeled potentials and, in particular, 



