Neural Mechanisms of Decision Making 261 



After Operant Conditioning to ICVs-S*^, 6/i-S^ 



s'G — ^ s;f-o^.^^^vA\\^^^^^\J\J^^^\^^J\,\^J\^ 



Correct 



siQ — ^v:vVvV^.\\Vv\\\^,■"^^^^^^^^J\\ 



tnror 



Fig. 11. 



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 conditioning (10 per second — S^, 6 per 



second — S ). (Top) Correct response to six per second flicker. (Bottom) Error of 



commission to six per second flicker. (From John, E. R. and Killam, K. F.: 



J. Nerv. Merit. Dis., 737.- 183-201, 1960.) 



the slow potential at about six per second seen most clearly in 

 centralis lateralis. 



Figure 11 shows the converse phenomenon in the same cat. The 

 top record shows correct performance to the non-reinforced six 

 per second flicker. The bottom record shows an error of commission 

 to the six per second flicker. Note the lessened frequency specificity 



