1. Performance as a function of drug, dose, and level of training

   • Oakley S. Ray
   • Lyle W. Bivens

   Original Investigations Pages: 103 - 109

2. Effect of benzquinamide on conditioned avoidance response and brain monoamine levels in the cat

   • Nils -Erik Andén
   • Lennart Hanson

   Original Investigations Pages: 110 - 115

3. Central effects of an inhibitor of tyrosine hydroxylation

   • H. Corrodi
   • L. C. F. Hanson

   Original Investigations Pages: 116 - 125

4. Nouvelle recherche sur le mécanisme d'action de quelques analgésiques centraux

   • J. Charpentier

   Original Investigations Pages: 126 - 147

5. Effect of chlorpromazine on avoidance acquisition as a function of CS-US interval length

   • Lorraine A. Low
   • Mona Eliasson
   • Conan Kornetsky

   Original Investigations Pages: 148 - 154

6. Barbiturates, lysergic acid diethylamide, and the social behaviour of laboratory rats

   • A. P. Silverman

   Original Investigations Pages: 155 - 171

7. Excretion of vanilmandelic and homovanillic acids in man during oxypertine treatment

   • U. K. Rinne
   • V. Sonninen

   Short Communications Pages: 172 - 178

8. The effect of methyl phenidate on the sleep cycle in man

   • Frederick Baekeland

   Short Communications Pages: 179 - 183

9. The interaction of high altitude and psychotropic drug action

   • Wayne O. Evans
   • Norman F. Witt

   Short Communications Pages: 184 - 188