The Perinatal Autonomic Cascade
A Sequential Model of Neonatal Autonomic Initialization
I am getting ready to travel home from Europe after being here for 36 days. While it was a really good teaching trip, the research that we accomplished was foundational. The capstone research event was a session I had the privilege to conduct in France with someone who passed through nine stages of now calling the Perinatal Autonomic Cascade. I am publishing the preprint of our first paper about this now. The paper is fairly technical, but its implications are enormous.
https://www.researchgate.net/publication/408481380_THE_PERINATAL_AUTONOMIC_CASCADE_A_Sequential_Model_of_Neonatal_Autonomic_Initialization
Abstract:
At the most fundamental level, birth is a transition from marine to terrestrial existence. The fetus lives in a neutrally buoyant, pressure-equalized environment, without gravitational gradients to manage cardiovascularly, without pulmonary gas exchange, without the requirement to source nutrition from outside the body. In the first moments and hours after birth, a precisely ordered series of neurological and neurochemical transformations must occur to prepare the physical body for this entirely novel reality. We call this the Perinatal Autonomic Cascade: a sequential initialization of autonomic systems — cardiovascular, respiratory, gravitational, vascular/baroreceptive, proprioceptive, interoceptive, vestibular, thermoregulatory, and neurochemical— each stage dependent on the successful completion of the one before it. This paper proposes a novel model of neonatal autonomic initialization — the Perinatal Autonomic Cascade — describing the sequential activation of the body’s autonomic systems in the minutes, hours, and days following birth. Drawing on established neonatal neurophysiology, the Autonomics framework developed by Hearth Science, Inc. (Kram, 2025), and clinical observations from over a decade of practice, we argue that the transition from intrauterine to extrauterine life involves a precisely ordered series of neurologically and neurochemically distinct ignitions and calibrations (autonomic structuring events), each contingent upon the successful completion of the preceding stage. The cascade is exquisitely sensitive to neurochemical context — particularly the presence or absence of oxytocin at critical initialization windows. Disruption of the cascade at any stage results in incomplete structuring of autonomic baseline parameters that may enduringly configure respiratory, neurocardiological, vascular/baroreceptive, proprioceptive, interoceptive, vestibular, thermoregulatory, and neurochemical baselines. Clinical case evidence suggests that the entire cascade, or selective incomplete elements can be identified and reinitiated in adult patients decades after incomplete perinatal initialization, reseting baseline autonomic parameters that undergird physiological function across numerous domains.
I am teaching this Saturday August 8, 2026 from 8 - 11 am Pacific time.