硬直強度 4/5

Vagus nerve and sideration: understanding the link

The vagus nerve orchestrates sideration. Its dorsal branch (evolutionarily oldest) triggers survival immobility. Its ventral branch (newer) handles calm and social connection. Training strengthens the ventral branch.

なぜ起こるのか — メカニズム

Polyvagal Theory (Porges 1994): 3 levels of autonomic nervous system — ventral vagal (social calm), sympathetic (fight/flight), dorsal vagal (sideration). Under extreme threat the order is: ventral → sympathetic → dorsal. Training goal: climb back up instead of down.

アヴィクザール体系の応答

Yehouda teaches 'vagal reset': coherent breathing (5 breaths/min) at session start, jaw stretches, vocal sounds. All tones the ventral vagal and shortens recovery time after stress.

イェフダ・アヴィクザール(10段) — フリーズはあなたのせいではありません — それは生物学です。しかし、それを経験した後に訓練するのは、あなたの責任です。