Detection of influence of brain-stem neurons and intra-cranial field potentials on the diaphragm activity

The archival magnetic typed data of experiments with cat wakefulness and sleep are analyzed. General goals and possible tools for the analysis of non-linear interactions in the nervous system are discussed The interaction between air-flow data, ponto-geniculo-occipital (PGO) waves, brain-stem neurons and electrical activity recorded in the diaphragm is analyzed. The analysis methods are engineered to meet the data processing requirements and include the analysis of individual potential waves and procedures for treating the non-stationary properties of the signals due to respiration. This analysis has definitely confirmed the existence of inhibition, which PGO waves exert on the diaphragm activity, and patterns of interaction of neurons with the diaphragm.