Single afferent taste fibers of the squirrel monkey resemble those of other species in displaying multiple sensitivity to the basic taste stimuli. However, most fibers respond best (i.e., with a higher frequency of response) to one of these stimuli. Hence individual fibers can be classified into groups according to the best stimulus. The following categories were found in the chorda tympani: sucrose-fiber, salt-fiber, and acid-fiber. Very little bitter response is found in this nerve. Thus the individual fibers peak with a best response at one of the so-called three basic taste stimuli, but with ‘side bands’ of response to the other basic taste stimuli. In most cases these side tastes are significantly weaker than the response to the primary stimulus, although some of the side tastes may be nearly as large as the primary response. Thus there is both multiple sensitivity of individual taste fibers by which ‘cross-fiber correlation patterns’ can be generated along with a peak response by which groups of afferent nerves can be identified or classified. The resolution of the paradox as between psychophysical and electrophysiological data appears at hand.