Interactions between the Central Nervous System and Hormones 83 



a pattern of ordinary arousal (Fig. 3, E); she raised her head, stood up and 

 usually went to the food bowl or extracted a pellet of feces from her anus 

 and chewed it (Fig. 4, f). 



A B 7 MIN. 



MALE MOUNTS FEMALE EJACULATION 



C 12 MIN. 



HEAD DEPRESSED ISEC 



D 15 MIN. E 16 MIN. 



M W > ( ll l l%l#t*^^ ^VVUVMMWMaM V^^V*»WlMrW^VW|^f/lW^A^'^vVv>'^^ ' 



I • ' lOOuV 



HEAD ELEVATED 



Fig. 3. EflFects of coitus on the EEG of an unanesthetized unrestrained female rabbit with 

 electrodes permanently implanted in her brain. EEG channels: FC, frontal cortex; LC, 

 limbic cortex; APV, anterior paraventricular nucleus (thalamus); SP, septum; MM, medial 

 mammillary nuclei; CC, corpus callosum; VHPC, ventral hippocampus; RET, midbrain 

 reticular formation. From Sawyer and Kawakami (32). 



