ANALYSIS OF SOME EVOKED SYNAPTIC ACTIVITIES 445 



campal elements is reflected in the finding that Ce and Cs augment evoked 

 activity and induce paroxysmal discharges in the hippocampus in the imme- 

 diate neonatal period. These observations taken together with those reported 

 here on the time-course of the development of diff'erent synaptic activities in 

 superficial regions of neocortex, may provide clues to the physiological pro- 

 cesses underlying the maturation of complex behavioral patterns and the 

 factors influencing their normal progression. 



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