Activity of bulbar respiratory neurons during passive hyperventilation.

摘要: Abstract Discharge of bulbar respiratory neurons was recorded extracellularly with tungsten microelectrodes in pentobarbitalized, urethanized, and unanesthetized decerebrate cats. Neuronal discharges were followed while the animals hyperventilated to apnea. Most inspiratory inactivated, late first affected. Some early units continued exhibit a rhythm for few seconds after apnea induced. An estimated quarter all went progressively into tonic discharge which could not be arrested by further overventilation. The majority expiratory sent slow additional Prior hyperventilation, most these began firing phase. remaining neurons, predominantly units, inactivated hyperventilation. Results suggest that this type residual exists simultaneously neuron populations. In recovery from apnea, some members both populations rhythmically cycles before any discernible inspiration.