Autonomic Neuroscience: Basic and Clinical

So i-- this directly impairs parasympathetic tone during sleep, destabilizing the precise autonomic balance required for coordinated pharyngeal neuromuscular function.

2021 Autonomic Neuroscience showed OSA patients showed persistent heart rate variability reduction.

HRV should be big, not small.

Direct marker of parasympathetic insufficiency, by the way, even during waking hours.