Related Experiment Video
Updated: Aug 9, 2026

Electrophysiology on Isolated Brainstem-spinal Cord Preparations from Newborn Rodents Allows Neural Respiratory Network Output Recording
Published on: November 19, 2015
Central origin vs. reflex feedback in the respiratory heart rate relationship
Abstract:
In the midcollicular decerebrate cat we have observed unique respiratory variation in heart rate (respiratory-heart rate relationship, RHRR) in respiratory intervals of 2-7 s or Biot's breathing of paired breaths at 16-s intervals. Cardiac slowing that marked the respiratory segmentation of the heartbeat showed consistent relationship with the breath it preceded by 1 to 5 s. Thus, association of respiration and heartbeat must include synergistically central interrelated origins for respiration cardiac rates constituting the RHRR.
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