[The characteristics of the phase relations between cortical potentials in dogs during the acquisition of motor-food conditioned reflexes].

Coherence-phase characteristics of cortical and bulbus olfactorius (BO) potentials were studied during the lever-pressing alimentary conditioning in dogs. These parameters were considered as the basic ones for forming the interareal functional relations in the process of conditioning. Variety of distributions of phase shifts between potentials in a wide frequency band (1-100, 1-256 Hz) at wakefulness permits to think about the spatial-successive processes participating in organization of the brain electrical activity. Values of phase shifts between cortical potentials were significantly less then those between the cortex and BO. At stable conditioned responses phase shifts between the cortical potentials diminished considerably due to intensification of the spatial synchronization processes while those between the cortex and BO increased to a higher degree.