Cognitive and Motivational
Operations in Primate Prefrontal Neurons
Masataka Watanabe, Japan ...........225
Hebbian synapses in
cortical and hippocampal pathways
Vladimir G. Skrebitsky and Aisa N. Chepkova, Russia .............243
Changes in Sleep and
Wakefulness Following 5-HT1A Ligands Given Systemically and Locally in
Different Brain Regions
Bjørn Bjorvatn and Reidun Ursin, Norway ............265
Physiological,
Pathophysiological and Therapeutic Roles of 5-HT Systems in Learning and Memory
Alfredo Meneses, Mexico ............275
Early Integration of
Retinal and Extra-Retinal Information: Recent Results and Hypotheses
Xavier M. Sauvan, Italy ...............291