Fig. 23

An overview of the results of 48 single fibers from the CT recorded in chimpanzee and presented in a topographical method. The area of the circles represents the number of impulses during the first 5 s of stimulation. Open circles represent inhibition or no response. The stimuli were arranged in the order of salt, sour, bitter, and sweet along the x axis. The fibers were arranged along the y axis in groups: NaCl-, acid-, QHCl-, and sucrose-best fibers. It is likely that the missing population of Q fibers is caused by the same factor as recorded in rhesus, namely bitter is better represented on the back of the tongue. We were never offered the opportunity to record from the NG in chimpanzees. [56]