Our dear friend and colleague Dr. Mark Brady was born at the end of July in 1946 and died at the end of July in 2025. As we approach the one year anniversary of his passing, we’re publishing this blog post about Neuroception, based on a Bonus Call he presented in my Developmental Model™ of Couples Therapy training program in 2015.

The Talmud says, “We don’t see the world as it is, we see the world as we are.” Long before neuroscience had the tools to explain why, this ancient observation captured something profound about human perception. Today, a growing body of brain research is catching up, and what it reveals has enormous implications for couples and the therapists who work with them.

At the heart of this understanding is a concept called neuroception: threat detection without awareness. The brain has structures devoted to constantly scanning the environment for danger, and they do so below the level of conscious thought. We don’t decide to feel threatened. Our body simply responds – often before our thinking mind has any idea what’s happening.

The Brain’s Primary Job

It helps to start with what the brain is actually built to do. One of the first neuroscientists at Stanford described the brain’s primary function as regulating arousal – mostly emotional arousal. This is why so many people find their way into a therapist’s office. They are struggling with a function that is, at its core, biological.

As a vast network processing energy and information from the world around us through our five senses, the brain is sometimes called an “enchanted loom.” What’s striking is that more than 80% of the brain’s roughly 86 billion cells are housed in the cerebellum, the small structure at the back of the brain responsible primarily for moving the body. This is not a minor anatomical footnote. It means that every single nerve cell in the brain ultimately terminates in a muscle. The implications for trauma treatment are significant: when the body can’t move, the brain interprets that as an emergency. This is one reason the freeze response is so powerful, and why body-based approaches to healing deserve serious attention in couples therapy.

The Big Brain Question

From before birth and throughout life, human beings are essentially asking one question of the people around them: Are you there for me? We ask it of our parents, our partners, our employers, our institutions. When the answer is yes, things tend to go well. When the answer is unclear or absent, the nervous system registers it as a threat to survival.

Part of what we’re asking when we pose this question is: Can you help me regulate when I can’t regulate myself? Even though emotional regulation is the brain’s primary job, it doesn’t always have the capacity to accomplish it alone ­– especially when we’re young, overwhelmed, exhausted, or triggered. An ongoing relationship, whether between parent and child or between partners, offers what researchers call co-regulation: the ability to help calm another person’s nervous system when their own internal resources fall short.

How the Stress Response Takes Over

When the brain detects a threat, real or imagined, it activates what’s known as the HPA axis: the hypothalamic-pituitary-adrenal system. This sends a cascade of hormones including adrenaline and cortisol through the body, pushing a person into fight, flight, or freeze. The critical word here is imagined. A very high percentage of the threats neuroception detects have no real basis in the present moment.

Mark offered a telling example from his own experience. One morning he received a message from a tenant saying there was a smell of sewage on the property. Within seconds, his mind had constructed an elaborate catastrophe: a failing septic system, a repair bill of tens of thousands of dollars, cascading problems. His body was fully in a stress response before he had taken a single step outside. When he investigated, the source turned out to be a dead mouse. The threat his nervous system had responded to so dramatically was entirely a story his brain had generated from minimal information.

This is how neuroception works. The brain is an organ whose primary job is to make sense of incoming data, and it will do so even when it has very little to go on. It fills in the gaps with memory, anticipation, and pattern recognition, and the body responds accordingly.

This is why couples can find themselves in full-blown conflict over a toothpaste tube, a dinner table seating arrangement, or which way the toilet paper roll faces. These are neuroception triggers. The heat generated in these moments is rarely about the object itself. It’s about older, deeper associations that the object has inadvertently activated.

The Body Holds the Memory

One of the most striking illustrations of how the body stores and processes threat comes from work with trauma. Mark described a man who, as an adult, had been attacked by multiple assailants who held him while a third person beat him. He was unable to defend himself or move freely ­– the classic conditions for a freeze response and subsequent traumatic encoding.

Years later, when that memory resurfaced in a therapeutic context, the treatment involved recreating the physical conditions of the original event – in slow motion and complete safety – and allowing the person to move his body in the ways he had been unable to at the time. The result was dramatic. What had been stored as an isolated, dissociated cluster of neural activity reconnected to the broader network. The person described feeling a surge of energy moving through his body, as though something long locked away had finally been released.

This makes neurological sense. Mark explained that every brain cell ultimately connects to a muscle, and so immobility during a threatening event leaves the stress response incomplete. The body never got to finish what it started. Somatic approaches to trauma engage  the body directly and work in part by giving the nervous system a chance to complete that interrupted response.

The Prefrontal Paradox

The part of the brain most responsible for managing these responses is the prefrontal cortex. This is the seat of what are called executive functions: planning, impulse control, emotional regulation, flexible thinking, and skillful listening. When the prefrontal cortex is well connected to the brain’s emotional centers, people can notice when they’re activated and bring themselves back down. When those connections are weak or temporarily overwhelmed, they can’t.

Here is the paradox: building robust neural connections between the emotional brain and the prefrontal cortex requires good impulse control. But having good impulse control is precisely what those connections make possible. You need the thing you’re trying to build in order to build it.

Fortunately, there are ways through this paradox. Therapy itself is one: a skilled therapist can temporarily serve as an external prefrontal cortex, helping a client regulate until their own capacity strengthens. Other approaches include yogic breathing practices. Exhaling longer than inhaling sends a physiological signal of safety to the brain. Contemplative practices done with genuine attention, and body movement can also strengthen capacity to self regulate. When couples in conflict take a walk around the block, the simple act of moving can begin to discharge stored stress hormones and restore access to clearer thinking.

Becoming Your Own Chief Adrenal Officer

Perhaps the most practical takeaway from this body of research is the importance of developing what Dr. Brady called the capacity to be your own “Chief Adrenal Officer.” This means learning, first, to notice when you’re in a threat response that has little to do with what’s actually happening in the room. And second, to have practices ready that bring you back to regulation.

Mark also pointed to a subtler form of neuroception trigger that shows up regularly in therapeutic and educational settings and relates to couples: evaluation. He described taking an online quiz through a neuroscience course. It wasn’t for any grade, and there was nothing at stake. And yet he felt his body begin generating a stress response the moment he reached a question he couldn’t answer. The experience instantly recalled memories of childhood tests and the hyperarousal that came with them.

Negative evaluation, real or perceived, is one of the most consistent neuroception triggers there is. Couples who are frequently critical of each other are, in neurobiological terms, keeping each other in a near-constant low-grade threat state.

This applies to therapists as much as it does to clients. A therapist in a state of hyperarousal is a less effective therapist. The goal is not the elimination of activation because that’s not realistic. The goal is increasing the speed and reliability with which we can return to a regulated state, and helping our clients do the same.

The brain is profoundly plastic. Small, consistent efforts to expand our capacity for self-regulation build real neural architecture over time, whether they are through breathing, movement, mindful attention, or therapeutic relationship. We don’t see the world as it is. But with practice, we can learn to see ourselves more clearly within it.

Mark’s Bonus Calls in my training program invigorated many folks to bring more info about the brain to their couples. Mark was a dear friend and a perpetual student himself. He also always loved sharing what he was learning. Did Mark teach you, either in the Developmental Model™ training or in today’s blog post? I will be sharing any of your comments with Mark’s daughter Amanda so please share freely in the comment section below.