Our nervous system’s goal is to keep us safe and alive. That is its job. Our nervous system has evolved from our hunter-gatherer days, when the world was full of danger. While our modern world is not as dangerous, our nervous system is still working in the same way.
Our brain and body are constantly absorbing and processing information. Parts of our brain use thinking and memory but there is more. Other parts of our brain (our limbic system) connect directly to our body. This part acts like an internal smoke detector that will scan our body for safety and danger, 95% of this we don’t consciously notice.
Information picked up from our body gets our nervous system into gear. The sympathetic system mobilises our body to be ready for action to threat and danger (fight or flight), and then the parasympathetic system slowly calms the nervous system afterwards, returning our body to its normal state.
These processes are autonomic since they occur unconsciously and involuntarily. They happen in response to every day stresses, even when our lives are not in real danger.
Our smoke detector can work in three ways; (1) It can help us feel safe when the ANS is in balance, (2) It can stimulate the sympathetic (fight or flight) system even when there is no real danger, and (3) It can stimulate the parasympathetic system which can lead us to shut-down or freeze.
Relatively new research by the neuroscientist Dr Stephen Porges adds to our understanding of how the ANS works. As said earlier, 95% of this activity is unconsciously happening in the brain and the body. What connects it all is the Vagus Nerve.
The Vagus Nerve is the sensory highway that enables the brain to collect and transmit information to and from our organs and muscles. It is one of the longest nerves in the body running from the brainstem at the base of the skull to the colon. It is an essential part of the parasympathetic nervous system, which helps calm our organs and deal with the aftermath of fight or flight. Polyvagal based theoretical approaches focus on the tone of the Vagus Nerve, since this influences our body’s ability to mitigate dysregulation in our autonomic nervous system.
This booklet is based on the work by Stephen Porges and Deb Dana. It might help you to better understand your nervous system and improve your wellbeing, using Polyvagal Theory. It is aimed at adults only (not children).
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.