1. Nicotine and caffeine: Disruption of the long-term store of memory and proactive facilitation of learning in mice

   • Jeffrey S. Stripling
   • Herbert P. Alpern

   OriginalPaper Pages: 187 - 200

2. Intracranial self-stimulation in rats as a function of various stimulus parameters

   • A. Wauquier
   • C. J. E. Niemegeers

   OriginalPaper Pages: 201 - 210

3. Behavioural and electrocortical modifications induced in the rat by intraventricular injection of physalaemin and eledoisin

   • G. de Caro
   • L. G. Micossi
   • E. Scarnati

   OriginalPaper Pages: 211 - 218

4. The relative attenuation of self-stimulation, eating and drinking produced by dopamine-receptor blockade

   • E. T. Rolls
   • B. J. Rolls
   • R. Dale

   OriginalPaper Pages: 219 - 230

5. Resistance to extinction of an avoidance response in rats following the administration of chlordiazepoxide (Librium) or diazepam (Valium)

   • David Ziskind
   • Zalman Amit
   • Morrie Baum

   OriginalPaper Pages: 231 - 238

6. Blood and urine levels of N,N-dimethyltryptamine following administration of psychoactive dosages to human subjects

   • J. Kaplan
   • L. R. Mandel
   • R. J. Wyatt

   OriginalPaper Pages: 239 - 245

7. Effect of intrahippocampal injection of atropine on different phases of a learning experiment

   • H. K. Singh
   • T. Ott
   • H. Matthies

   OriginalPaper Pages: 247 - 258

8. Effect on pseudoconditioning of drugs with known central nervous activity

   • Ivan Izquierdo

   OriginalPaper Pages: 259 - 266

9. 5-Hydroxytryptophan in combination with clomipramine in “therapy-resistant” depressions

   • Herman M. van Praag
   • Willem van den Burg
   • Louise C. W. Dols

   Letters to the Editors Pages: 267 - 269