[The motivational support of complex behavioral reactions in rats]

Unit activity of the medial wall of the frontal cortex was studied during spatial delayed performance in rats. Significant modifications of the neuronal activity were observed after the change of motivation. Direct neuronal projections from hypothalamic nuclei to the medial wall of the frontal cortex were revealed by horseradish peroxidase technique. The role of hypothalamo-cortical interaction in organization of motivational and emotional components of behaviour is discussed.