Dysregulated Nervous Systems
and the Window of Tolerance

Your nervous system is always monitoring whether situations feel safe or threatening. When you’re within your window of tolerance, your body and mind can stay regulated enough to think clearly, feel your emotions, and respond in a way that is functional, positive, and supportive of your goals. Dysfunction regularly occurs when you are operating outside your window of tolerance.

In clinical terms, this often shows up through two main response systems. The parasympathetic nervous system supports calm, recovery, and restoration (sometimes described as moving toward hypoarousal). The sympathetic nervous system supports mobilisation—fight, flight, freeze, and appease (often experienced as hyperarousal when stress feels too intense).

For many people, especially those with a history of trauma, stress, anxiety, or relationship concerns, the window of tolerance may narrow. You’ll notice this demonstrated on our image as the words hyper-arousal and hypo-arousal are strategically placed to “block the view” through the window.

If you notice patterns in your behaviour like shutting down, going blank, feeling on edge, becoming defensive, panicking, or over-trying to please to feel safe, that’s a useful sign your support should focus on expanding regulation and choice.

Let us support you in reaching and maintaining your window of tolerance. You can book your first telehealth session as a new client here.