EFFECTS OF RADIATION ON CNS AND ON BEHAVIOR 



641 



Fig. 16. Depressed Kool-Aid ingestion during irradiation of monkeys. 



radiation weeks and was unaffected for the control subject (Fig. 16). These 

 monkeys were the only subjects to give unequivocal preference suppression 

 effects after radiation, but supplementary data showing- Kool-Aid and apple 

 juice avoidance during the radiation sessions were obtained on additional 

 subjects (Fig. 17) . 



NO. 463 KOOL-AID 



1 1 r 



NO. 463 APPLE JUICE 



NO 474 APPLE JUICE 



50 100 150 50 100 



ROENTGENS 



Fig. 17. Radiation-induced depression of cider ingestion by a monkey. 



