Thursday, 2 August 2012

The Polyvagal Theory and the Completion of the Orienting Response

Another extract from Robin Bernhard.

I feel that this is quite relevant to the work that we do in TTouch. How often are animals prevented from displaying any reaction or feeling?  All the time!  They are inhibited from barking in case it disturbs the neighbours.  They can't jump because someone's clothes will get dirty.  When something frightening happens they can't run away because they are on lead and so on. Just finding a mechanism that will allow them to complete the orienting response, even during things as simple as daily walks, could contribute to make life less stressful for them on many levels. These mechanism could include ear work, Noah's March including our maxim of "Calm the tail, calm the dog".

"Light touching of the skin stimulates the parasympathetic nervous system and provides a natural way for us to calm down. The vagus nerve makes up most of the parasympathetic nervous system and connects the heart, lungs, organs and intestines to the brain.  Light touch of the skin over the heart, lungs and gut triggers both the release of oxytocin and simnultaneously engages the vagus nerve. (...) 

The initial quietude and appearance of the soft eye seen in our group members when they were first wrapped may be a subtle sign of what is called the natural orienting response. When something changes in an animal's environment, certain innate behaviours, such as turning the head in the direction of the change and becoming erect and alert, are all part of this response. Trauma theory describes PSTD as the orienting response stuck in the freeze mode of the fight/flight/freeze/faint trauma response. Animals in the wild either run away or fight unless death is imminent at which point they will freeze and faint before they are killed. This part of the polyvagal system is the most ancient, the dorsal motor portion of the vagal system.

Humans and domesticated animals in modern society are often unable to release fear using this mechanism because fighting or fleeing is discouraged or prevented.  Instead, frozen states of fear and rage are held in body memory, in the cells and tissues. Without alternative ways to care for these reactions we develop the symptoms associated with chronic stress.  When Tellington TTouch Body Wraps stimulate and warm the skin they offer another pathway to care for our stress reactions which can be partially explained by the healthy engagement of the vagus nerve and the ventral portion of that system.

The polyvagal system is actually two systems which can function independently, the dorsal motor pathway and the ventral vagus pathway. The ventral vagus pathway offers the second pathway for handling a stress response. Stephen Porges labelled this pathway "the social nervous system" because it represents a solution to stress or fear that involves social engagement. Infants activate this system when they seek and obtain support and nurturance from parents who create safety through protective and loving actions towards them. The social engagement system includes the face and facial expressions, the neck for turning the head in the direction of seeking help, the chest, the back and the arms for reaching out. When this social nervous system is activated, the ancient fight/flight/freeze/faint reactions are inhibited.

(...)

It is believed that keeping the eyes open stimulates the ventral vagus complex and allows the orienting response to be completed in safety. As we mentioned earlier, the application of the wraps seems to trigger the orienting response in group members. Simply allowing the orienting response to complete rather than be disrupted, as it was at the time of the trauma, is one way of helping to release trauma holding patterns."

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