[Interaction of central and peripheral temperature signals on the thermosensitive neurons of the hypothalamus].

Changes in the mean firing rate of neurons in the posterior hypothalamus were studied in unanesthetized rabbits at the local increase in the brain temperature (0.7-1.5 C) and at an increase in the skin temperature (3-5 degrees C). 85 neurons were examined in 14 rabbits. 11 neurons (of 85) responded selectively to one of the used temperature influences. Changes in the unit activity to both temperature influences (more often of the same direction) were observed in 16 neurons. Different types of these neuronal responces were found. An increase in thermosensitivy was found in some neurons when the thermal stimulation of the skin was intensified.