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ROBERT M. BENJAMIN 



and, in fact, completely outside somatic sensory cortex (Benjamin and 

 Welker, 1957). This spatial separation reminded us of the rat thalamus and 

 again led to the enticing possibility that the anterior area (black) might be 

 pure taste. The results from the IXth nerve were encouraging. Again 

 there were two projection areas, one of which was assigned to taste 



Fig. 14. Above : Cortical areas in tiie squirrel monkey activated by electrical 



stimulation of the chorda tympani, lingual branch of the IXth and pharyngeal 



branch of the Xth nerves. Below : Composite area compiled from a number 



of such recording experiments. 



(black). Stimulation of the pharyngeal branch of the Xth nerve which has 

 few, if any, taste fibers, conveniently produced only one responsive area. 

 Our conclusion was that the black areas had taste function and the white 

 areas constituted the non-gustatory somatic sensory tongue properly 

 oriented with its tip pointing into the mouth (Woolsey, 1958). 



Maps from a number of experiments were combined to produce the 



