PHYSIOLOGY OF CHEMORECEPTION 



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Table 1. EEG and behavioral responses to pure chemicals and extracts 

 added to sea water. 



Compound 



Range of 

 concentrations 

 (molar) tested 



EEG 

 response 



Behavioral 

 response 



Electrolytes 



NaCl 



NH 4 C1 



Kcl 



CaCl 2 



MgCl 2 



LiCl 



lO" 1 

 10" 1 

 10" 1 

 lO" 1 



10- 1 



10' 1 



lO" 7 

 lO' 7 

 lO" 7 

 lO" 7 

 lO" 7 

 lO" 7 



+ 

 + 

 + 

 + 

 + 

 + 



+ 

 + 

 + 

 + 

 + 

 + 



KI 



KNO3 

 KBr ' 

 KF 



HgCl 2 

 CuSO, 



lO" 1 

 lO" 1 



10- 1 

 10- 1 



10- 1 

 10- 1 



-> 



lO" 7 



10- 7 

 10- 7 

 10- 7 



10- 7 

 10- 7 



+ 

 + 



+ 



-(?) 

 -(?) 



+ (?) 



+ 

 + 

 + 

 + 



+ 

 + 

 + 

 + 

 + 



+ (?) 

 + (?) 



Amino acids and amines 



Glycine 



Glutamic acid 



Cysteine 



D-Serine 



L-Serine 



D-Methionine 



L-Methionine 



Note: "+" indicates consistent EEG changes or positive behavioral responses. "— " in- 

 dicates lack of detected responses. (N.T.) designates not tested. (N.A.) designates 

 measurement not applicable. For further details consult text. 



