Trauma is not simply about what happened, but about what happened inside a person’s nervous system when they were faced with experiences that exceeded their capacity to manage and regulate them. It is not only an unpleasant memory but a deep biological imprint. Often it is not a single event but years of exposure to fear, instability, neglect, emotional absence, or unpredictable and unsafe relationships. It is an experience recorded in the brain, in the body, and in the way we relate to others.
Contemporary neuroscience and Daniel J. Siegel’s Interpersonal Neurobiology confirm what therapists have been observing in clinical practice for years: trauma does not “stay in the past”. It is inscribed in neural connections, in the biology of stress and in bodily memory (van der Kolk, 1994; Siegel, 2012).
When a person experiences something frightening, painful or disorganising, the brain does not simply record an event; it reorganises itself around survival. Stress hormones surge, the amygdala — the brain’s alarm system — becomes hypersensitive, while the prefrontal cortex, associated with rational thought, language and meaning-making, struggles to stay functional in moments of intense emotional activation.
The organism then moves into defensive survival states: fight, flight or freeze. Freezing, the state of immobilisation, is often misread as passivity or weakness. In reality it is an ancient biological survival strategy of the nervous system, used when neither flight nor resistance seems possible.
These neurobiological changes do not necessarily disappear once the danger has passed. This explains why many people with traumatic experiences go on experiencing hypervigilance, tension, dissociation, physical symptoms or intense emotional reactions even within objectively safe environments. The nervous system has learned to expect danger.
In Gestalt psychotherapy we often say that trauma disrupts a person’s capacity to be in living and authentic contact with themselves, their body and their environment in the here and now. The person is not responding only to what is in front of them, but also to old unfinished experiences that go on being activated in the present. The past breaks into their relationship with themselves and with others as though it were happening now.
Trauma, however, is not only recorded in biology. It also disrupts a person’s deepest existential truths: their sense of safety, trust, continuity, meaning and connection. When someone is wounded within relationships, they often begin to perceive the world as unpredictable and themselves as inadequate, invisible or unworthy of love. This is where various internal distortions are laid down — about body image or other characteristics that have become linked with conditional love and acceptance.
And because in states of intense activation the brain does not operate mainly through logic and language, the treatment of trauma cannot be limited to understanding or narrative. Many people can explain their history with precision and yet go on experiencing it bodily as though it were still happening.
This is why the treatment of trauma also concerns bodily experience: the breath, posture, movement, sensation, awareness of the nervous system’s activation. Regulation does not always begin with words; often it begins with the experience of a body that can learn, and feel, that it does not have to remain constantly on alert.
At this point the therapeutic relationship becomes central. According to Interpersonal Neurobiology and relational psychotherapy, human regulation is a deeply interpersonal process. Our nervous system is shaped within relationships and is also healed within relationships. The safe presence of another person can function as an experience of co-regulation: the body gradually begins to learn that closeness does not necessarily mean danger.
The therapist does not function as a neutral observer but as an active relational participant. Through steadiness, emotional availability, eye contact, empathy and the possibility of existing without having to hide or constantly adapt, a new experience of relationship is created. What we call in psychotherapy a “corrective emotional experience” has a neurobiological basis.
A brain that has experienced abandonment, abuse or neglect does not start each new relationship with a clean slate. It starts with a nervous system trained to stay vigilant, to scan continually for signs of rejection or danger, and to prepare for what was once necessary in order to survive. And very often, what the brain reads as a threat is not only about the present situation; it is the shadow of the past falling across the present.
A client with a history of emotional neglect and abuse from her parents came to therapy during a period when she was trying to build a new relationship. She had worked very hard in her life to achieve a successful job that gave her what she needed, along with studies that contributed to her development — but something in her relationships could not move forward the way she wanted. The fear did not appear as a memory, but as a bodily state: tightness in the chest, dread and worry, hypervigilance, a permanent sense that something was going to go wrong.
A delayed reply or a small distance in communication was enough to activate the old fear of abandonment inside her. Her brain did not interpret the situation as a normal period of absence that she could bear. She experienced it as confirmation of a deeper relational trauma: “He’ll leave. They always leave. No one stays to love me.”
An old survival pattern would then be activated automatically: try harder, secure the connection, prove that she deserved to be loved. And so the anxious attachment moves would begin — excessive availability, the need for constant reassurance, difficulty bearing the uncertainty of the relationship. Often, these reactions ended up creating exactly what she feared most: distance.
He would tell her she was overreacting, but her nervous system could not yet clearly separate the present from the past. In front of every new possibility of relationship stood her old trauma.
When a relationship begins to matter, internal working models of relationship are automatically activated — the deep, unconscious expectations formed within the first significant relationships of our lives. These models affect the way we perceive ourselves, others, intimacy, love and so on. They work like an old neural pathway that is activated before we have time to think about it consciously.
Therapy does not aim to make a person stop feeling or stop reacting. It aims to create more awareness, regulation and freedom within the moment of activation. A small but crucial distance between the trigger and the automatic reaction.
The moment when someone can recognise the pattern: “What I’m feeling now is not only about this relationship. It touches something much older in me.”
That moment of awareness is often the beginning of change.
Because in the end we do not see people only as they are. We also see them through the way we learned to see ourselves within our earliest relationships.
