282 



BRUCE P. HALPERN 



100- 



Time (sec.) 



Fig. 7. Chorda tympani summated response magnitudes following chemical 

 stimulation of the anterior tongue of one rat. Ordinate represents magnitude 

 of the summated neural response to each chemical in arbitrary units, 

 adjusted to 100 units for the maximum (peak) response for each chemical. The 

 bar diagram represents the peak summated neural response magnitudes to the 

 four chemicals, all on the same arbitrary scale (e.g. the response to NaCl was 

 41mm pen deflection). The tongue chamber is filled with stimulating fluid for 

 approximately 10 sec. Summator rise time (RC) = 0.5 sec. Arrows indicate 

 onset of H2O rinse. Reproduced from Halpern, B. P., Bernard, R. A., and 

 Kare, M. R. 1961. Amino acids as gustatory stimuli in the rat. /. Gen. 



Physiol. 45, 681. 



Fig. 8. Temporal characteristics of the chorda tympani summated neural 

 responses to one concentration of NaCl, glycerin, glycine, and DL-alanine 



Table values are medians based on a total of eleven rats. Dashes indicate 

 that no median data are avilable for that postpeak interval. 

 Reproduced from : Halpern, B. P., Bernard, R. A. and Kare, M. R. 1961. 

 Amino acids as gustatory stimuli in the rat. J. Gen. Physiol. 45, 681. 



