Along with our cultural environment, our brain and nervous system are among the primary creators of our boundaries.
Different systems in the brain relate to different parts of our energetic boundary system.
Our physical boundaries are related to our skin and the most ancient part of the brain. The brain scans the environment (approximately four times per second in fact) to make sure our skin isn’t being touched in a way that is harmful or dangerous. This scanning is automatic in our brain stem, just as it is in the reptiles and our evolutionary elders.
Our emotional and psychological boundaries are related to our limbic system, the subcortical structures of the brain. Our psychological boundaries are formed when we are children. When there is proper attunement and mirroring of our emotional landscape, we learn what our emotional identity is, and how it is different from those around us.
For example, a two-year old having a tantrum might be offered a reflection, “Oh, it looks like you’re mad. You want to play with your toy, don’t you? It’s ok to be mad and right now it’s time for you to get dressed.” The child learns about the emotion “mad”, that it’s ok to feel that way, and that it is her feeling – no one else’s. With regular attunement, the child’s brain learns to know that her feelings and thoughts are ok, and to differentiate from those in her environment. She isn’t enmeshed with the feelings of those around her, but can clearly see where she starts and ends.
These psychological boundaries also allow in information that is true and keep out what isn’t. For example, if you’re told you are a blue truck, you might be able to keep that information out - because you know very well that you aren’t.
Finally, our ability to keep our word to ourselves and practice impulse control (what might be called a containing boundary) is situated in the neocortex, the newest and most uniquely human part of the brain. This thin layer of gray matter is active when we keep to our commitment to finish the project rather than binging on Netflix, put down the phone and get a good night’s sleep rather than scrolling social media and finish one project before starting the next.
Knowing about the role of the brain and nervous system is helpful for generating compassion with ourselves when learning about boundaries. These adaptations took some time to develop, and they require time to evolve. The good news though is that with attention and intention - coupled with the miracle of neuroplasticity - our nervous system and boundaries can become more functional and life-affirming.
Dos and Don’ts of boundary setting
