Mild Dissociation (Para-Dissociation)

Have you ever felt as if you were walking through fog so dense that you could see only the ground beneath your feet? This is close to the mild dissociation that can accompany anxiety: a natural reaction of the brain to stress, a kind of safety valve. Part of you steps back and watches the world go on, without feeling fully part of it. This sensation involves the dorsal vagus nerve (the branch of the vagus nerve that slows the body down and, under threat, can switch it into shutdown). When anxiety rises, this circuit can activate, and we feel we are outside, looking in. The experience is puzzling and can bring a sudden sense of mental distance from everything around us. Recognizing it as a normal response of the nervous system to stress is the first step towards a clearer path and a renewed sense of connection.

We can also call this para-dissociation: the self feels slightly removed from the body, and the body is perceived differently.

Anxiety often triggers a primal response in the nervous system that produces mild dissociation. We can understand it as the mind's attempt to protect itself from distress by creating distance from the immediate experience: the brain steps back from an intense situation and observes instead of taking part. In mild dissociation a person may feel slightly removed from their body or surroundings, as if in a dream. The disconnection is not intense, but it is enough to feel "off". It is linked to the activation of the dorsal vagus nerve, which supports rest and recovery but, when overstimulated by anxiety, can leave us numb or distant. In our practice we observed this light detachment, with the gaze losing focus and the body growing still, long before anyone spoke of a dorsal vagal response; polyvagal theory now places it among the body's defence responses. Understanding these responses is key to approaches that help a person manage anxiety and reconnect with their inner sensations and with the world.

After mild catalepsy (a state in which the body grows still and holds its posture), the next level is depersonalization.

Depersonalization is a complex psychological experience, often triggered by severe or prolonged anxiety. The person feels disconnected from their own body, emotions and surroundings, as if watching themselves from outside. Neurologically, this may be linked to increased activation of the vagal brake (the action of the vagus nerve that slows the heart and calms the body), a stress response meant to slow us down and conserve energy. During intense anxiety this response can go into overdrive.

During depersonalization the heart responds differently to emotional and cognitive processes, and this shows in heart rate variability (HRV: the small changes in the interval between one heartbeat and the next). HRV reflects the balance between the parasympathetic and sympathetic inputs (the calming and the activating branches of the autonomic nervous system) that reach the heart through the sinus node, its natural pacemaker. Emotions such as happiness tend to increase HRV, while fear or anger tend to reduce it. Research also links this variability to cognitive functions: higher HRV is associated with better memory, attention and language processing.

When a person ruminates or turns deeply inward, heart rate variability tends to decrease. This suggests that in depersonalization, when the person feels detached, the body is in a state of reduced cognitive and emotional responsiveness. This detachment is not always negative: it can protect the person from overwhelming situations.

The heart also plays a central role in how we perceive the world. Studies show that cardiac activity can influence perception: our heartbeat may affect the way we see and process our environment. The Thayer-Lane model (the neurovisceral integration model proposed by Julian Thayer and Richard Lane) suggests that the brain regions that regulate emotion and cognition also influence cardiac activity through the vagus nerve. Feeling, thinking and the rhythm of the heart are therefore closely connected.

Depersonalization and the related changes in heart rate variability thus show how closely emotional state, cognitive functions and physiological responses work together, and how central the heart is to our experience of ourselves and of the world.

Tunnel vision in dissociation is a phenomenon in which perception narrows sharply, as if looking through a long tunnel. It often occurs under extreme stress or anxiety and can also result from trauma, which changes how the brain processes information. In these moments a person may focus so intensely on one internal or external point that they lose contact with the wider reality around them.

This tunnel vision can act as a psychological defense: the mind protects the self by concentrating on a single aspect of experience and filtering out the overwhelming noise of the environment. It creates a buffer zone, a safe mental space, where the self can withdraw and regroup.

Neurologically, this intense focus and narrowing of perception may be linked to the simultaneous activation of the dorsal vagus nerve and of the sympathetic system (the branch that mobilizes the body for action), together with a fight-or-flight response.

Tunnel vision is a narrowing of perception that lets a person focus intensely on an immediate threat. In this state we feel "amped up": anxious or angry, ready to confront or to flee. Physiologically, the heart rate increases and tension rises in the limbs, as the body directs blood flow there in preparation for action.

During fight or flight our sensory experience narrows: the body treats the threat in front of us as the only thing that deserves attention. This evolutionary response is still triggered today by situations the body interprets as threatening, even when they pose no real physical danger.

When this part of the nervous system becomes dominant, it can produce a form of dissociation in which the person's experience of self and world becomes constricted and distant. They may feel detached, as if their "I", their core sense of self, had slipped back from the present moment into the role of observer.

In this state awareness of one's own body and emotional responses can diminish. It is a paradoxical attempt to regain control by reducing sensory and emotional contact with the environment. Tunnel vision can offer temporary refuge, but it can also limit a person's ability to respond adaptively to their circumstances. It can be a lonely experience, and it reveals a deep need for protection against what feels like an overwhelming world.

Complete dissociation is a profound level of detachment that can occur under intense, prolonged anxiety. It is more than a moment of feeling slightly disconnected: consciousness can seem entirely split from physical sensations, emotions and memories. The "I", the core of identity, seems to step out and observe life from far away.

Neurologically, this state may be associated with an extreme activation of the vagal brake, especially of the dorsal vagal complex (the brainstem centers of the dorsal vagus), which can trigger a shutdown response when the system is overwhelmed. This survival mechanism "turns off" non-essential functions to conserve energy when life seems under threat. In complete dissociation, however, the response can become maladaptive, producing a disconnection so intense that the person feels entirely removed from their own life.

The heart, a sensitive indicator of our emotional state, reflects this dissociation. Heart rate variability, normally the sign of a responsive and emotionally nuanced organism, may become disrupted. In full dissociation the heart keeps beating, but its rhythm may no longer follow the movement of the emotions: it works as a mechanical pump, detached from the person's emotional life.

Complete dissociation can lead to fugue states, episodes in which a person loses contact with their identity and may even take on a new one for a period. This is a more extreme form of dissociative amnesia, in which the link between identity and memory breaks apart. Clinical techniques such as hypnosis or EMDR (Eye Movement Desensitization and Reprocessing, a method that uses guided eye movements to reprocess traumatic memories) can bridge the gaps in a dissociated psyche, integrating the fragmented parts and restoring a sense of wholeness.

Schizoid personalities, Enneagram Type 5 and avoidant types form three closely related profiles among psychological typologies (the Enneagram is a model that describes nine personality types). These personality structures often show a marked tendency to self-dissociate, a mechanism that can act both as a protective shell and as a lonely prison.

Schizoid Personalities: Emotional Isolation as a Strategy

Schizoid personality types are characterized by deep detachment from social relationships and a restricted range of emotional expression with others. This is more than a preference for solitude; it is an almost structural part of the person. The schizoid individual often moves through life as an observer rather than a participant, as if experiencing it through a veil.

This detachment can be traced to the activation of the dorsal vagus nerve, which, when overactivated, can induce a state of disconnection. In polyvagal theory this nerve is associated with the "freeze" state, a response to overwhelming stress or perceived threat. For the schizoid personality the outside world itself often feels threatening: not physically, but as emotionally overwhelming or intrusive.

Type 5 of the Enneagram: The Intellectual Observer

Type 5 of the Enneagram, also called the Investigator, brings this observer stance to an intellectual level. Fives seek to understand the world but often feel overwhelmed by it. To manage this, they may dissociate unconsciously, stepping back from intense experiences to analyze and understand them from a safe distance. This shows as emotional coolness and a preference for mental activities, where the security of knowledge protects them from the unpredictability of emotional involvement.

Avoidant Types: Emotional Distance as Safety

Avoidant personality types resemble schizoid and Type 5 individuals in their basic approach to relationships. They keep their distance out of a deep fear of rejection: by withdrawing first, they avoid the pain of possible dismissal or disapproval.

The Observer/Personality Dyad and the Phenomenon of Rejection

In these personalities the anticipation of rejection is so ingrained that the body itself seems to hold its memory. There is often a perceptual barrier, described as a "covering over the eyes", that prevents real connection with others. It may come from past experiences of rejection so painful that they shaped the psyche. Public figures such as the politicians Dan Quayle or Ross Perot could be seen as examples of these traits under the intense scrutiny of public life.

The Loneliness Behind the Shield

Behind the appearance of self-sufficiency lies an unacknowledged loneliness. Their defensive withdrawal tries to protect them from the engulfment they felt in early life, perhaps from overwhelming parental figures. The strategy often backfires: it leads to a self-imposed isolation that deepens the very loneliness they are trying to avoid.

Dissociation and Detachment as a Strategy for Wholeness

These individuals may turn to accumulation to fill the void left by their detachment. By collecting knowledge, possessions or experiences, they try to create a sense of completeness. This avarice comes from the fear that others will take away the little they feel they have.

The I-dentity Act: A Compensation for Inner Emptiness

Schizoid, avoidant and Type 5 personalities often build an "I-dentity", a facade of omniscience or spiritual detachment, to hide their fear of being seen as empty or inadequate. It compensates for the loss of Essence, the core of their true self, which they feel they must protect from the world's invasive gaze.

Conclusion: The Paradox of Self-Protection and Isolation

The paradox of these personalities lies in how they protect themselves. By dissociating and detaching, they try to preserve their Essence, yet they often cut themselves off from the richness of human experience. Their withdrawal shields them from pain but can also block joy, connection and vitality. Understanding these dynamics is essential for anyone who wants to reconnect with their Essence and live a more integrated life.

Schizoid personalities, Enneagram Type 5 and avoidant types form three closely related profiles among psychological typologies (the Enneagram is a model that describes nine personality types). These personality structures often show a marked tendency to self-dissociate, a mechanism that can act both as a protective shell and as a lonely prison.

Schizoid Personalities: Emotional Isolation as a Strategy

Schizoid personality types are characterized by deep detachment from social relationships and a restricted range of emotional expression with others. This is more than a preference for solitude; it is an almost structural part of the person. The schizoid individual often moves through life as an observer rather than a participant, as if experiencing it through a veil.

This detachment can be traced to the activation of the dorsal vagus nerve, which, when overactivated, can induce a state of disconnection. In polyvagal theory this nerve is associated with the "freeze" state, a response to overwhelming stress or perceived threat. For the schizoid personality the outside world itself often feels threatening: not physically, but as emotionally overwhelming or intrusive.

Type 5 of the Enneagram: The Intellectual Observer

Type 5 of the Enneagram, also called the Investigator, brings this observer stance to an intellectual level. Fives seek to understand the world but often feel overwhelmed by it. To manage this, they may dissociate unconsciously, stepping back from intense experiences to analyze and understand them from a safe distance. This shows as emotional coolness and a preference for mental activities, where the security of knowledge protects them from the unpredictability of emotional involvement.

Avoidant Types: Emotional Distance as Safety

Avoidant personality types resemble schizoid and Type 5 individuals in their basic approach to relationships. They keep their distance out of a deep fear of rejection: by withdrawing first, they avoid the pain of possible dismissal or disapproval.

The Observer/Personality Dyad and the Phenomenon of Rejection

In these personalities the anticipation of rejection is so ingrained that the body itself seems to hold its memory. There is often a perceptual barrier, described as a "covering over the eyes", that prevents real connection with others. It may come from past experiences of rejection so painful that they shaped the psyche. Public figures such as the politicians Dan Quayle or Ross Perot could be seen as examples of these traits under the intense scrutiny of public life.

The Loneliness Behind the Shield

Behind the appearance of self-sufficiency lies an unacknowledged loneliness. Their defensive withdrawal tries to protect them from the engulfment they felt in early life, perhaps from overwhelming parental figures. The strategy often backfires: it leads to a self-imposed isolation that deepens the very loneliness they are trying to avoid.

Dissociation and Detachment as a Strategy for Wholeness

These individuals may turn to accumulation to fill the void left by their detachment. By collecting knowledge, possessions or experiences, they try to create a sense of completeness. This avarice comes from the fear that others will take away the little they feel they have.

The I-dentity Act: A Compensation for Inner Emptiness

Schizoid, avoidant and Type 5 personalities often build an "I-dentity", a facade of omniscience or spiritual detachment, to hide their fear of being seen as empty or inadequate. It compensates for the loss of Essence, the core of their true self, which they feel they must protect from the world's invasive gaze.

Conclusion: The Paradox of Self-Protection and Isolation

The paradox of these personalities lies in how they protect themselves. By dissociating and detaching, they try to preserve their Essence, yet they often cut themselves off from the richness of human experience. Their withdrawal shields them from pain but can also block joy, connection and vitality. Understanding these dynamics is essential for anyone who wants to reconnect with their Essence and live a more integrated life.

Learn the method

Mesmeric Polyvagal Therapy is taught in the courses of Dr. Paret's School (ISI-CNV – Université Européenne): live seminars and online lessons, from the first-level Master to advanced training, with specific expertise in polyvagal hypnosis, trembling, completion of the response and ventral vagal stimulation. Request the programme and the next dates: our first contact is always a WhatsApp message, never a call.

→ Request information on the courses

→ Videos and international activity of Dr. Paret

→ marcoparet.com: the School of Dr. Paret

→ Polyvagal Hypnosis

This site is available in: English · Italiano · Français · Русский · 中文

Research notes

A selection of peer-reviewed studies on polyvagal theory and vagal function that offer a scientific reading of the topics discussed in this article.

Lanius RA, Vermetten E, et al. (2010). Emotion modulation in PTSD: clinical and neurobiological evidence for a dissociative subtype. American Journal of Psychiatry, 167(6), 640-647. The authors describe a dissociative subtype of PTSD marked by emotional over-modulation through prefrontal inhibition of limbic regions, in contrast with the more common hyperaroused, under-modulated form. https://doi.org/10.1176/appi.ajp.2009.09081168

Schalinski I, Schauer M, Elbert T (2015). The shutdown dissociation scale (Shut-D). European Journal of Psychotraumatology, 6, 25652. Based on the defence-cascade stages 'fright, flag and faint', this interview assesses vulnerability to shutdown dissociation and showed good reliability and validity in 225 patients and 68 controls. https://doi.org/10.3402/ejpt.v6.25652

Kozlowska K, Walker P, et al. (2015). Fear and the defense cascade: clinical implications and management. Harvard Review of Psychiatry, 23(4), 263-287. This review distinguishes freezing, tonic immobility and collapsed immobility within the defence cascade, each with a distinct pattern involving sympathetic and vagal nuclei; it offers a physiological map for cataleptic and dissociative states. https://doi.org/10.1097/HRP.0000000000000065

Chabbouh A, Abbas R, et al. (2026). The freeze-arrest model of catatonia: a critical neuroimaging review with evo-neurobiological integration. Progress in Neuro-Psychopharmacology and Biological Psychiatry, 150, 111953. This critical review compares neuroimaging findings in human freezing and in catatonia and proposes that akinetic catatonia may be a maladaptive counterpart of the freeze-to-tonic-immobility response; the model is presented as testable rather than established. https://doi.org/10.1016/j.pnpbp.2026.111953