Spatial interactions of blood pressure reflexes.

Spatial interactions of depressor and pressor reflexes evoked by unilateral and bilateral stimulation of various and somatic afferents were analysed in chloralase-pentobarbital or pentobarbital anaesthetized cats. It has beed found that the dynamics of the spatial interactions can be described by regression equations as a function of the size of the responses evoked by separate stimulation. The angle of inclination and the position of the regression line in the coordinate systems is influenced by the type of reflex, the anaesthetic used and the functional state of the animal. At standard conditions the relations are reproducible. Sagittal splitting of the medulla and the pons did not essentially alter the character of the interaction. The forms of the interactions were unaffected by previous stimulations.