Depersonalization / Derealization

Week 4 of the Nervous-System States (Modes) Series

When the experience of the self, body, or surrounding world no longer feels fully familiar or connected.

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Recognizing the Experience

Many people describe periods when they no longer feel fully connected to themselves, their bodies, or the world around them.

Common experiences include:

• feeling emotionally distant or detached

• feeling disconnected from your own body

• thoughts, emotions, or physical sensations not feeling like your own

• surroundings feeling dreamlike, unreal, or strangely unfamiliar

• feeling like you are observing life rather than living it

Many people struggle to find words for the experience. They often know that nothing around them has actually changed, yet everything feels different.

Some describe moving through the day on autopilot—present, but not fully engaged.

These states can feel profoundly distressing because the normal sense of familiarity and connection seems disrupted.

What Is This State?

Depersonalization and derealization are altered experiential nervous-system states, or modes.

Depersonalization refers to changes in the sense of self or body.

Derealization refers to changes in the perception of the surrounding world.

These experiences often occur together and may fluctuate over time.

Rather than primarily affecting energy, activation, or physical symptoms, these states alter how experience itself feels.

Like other nervous-system modes, these are not random collections of symptoms. They are coordinated states involving multiple interacting brain–body systems.

What Is Changing in the Body?

During depersonalization and derealization, systems involved in body awareness, emotional experience, and sensory processing begin functioning differently together.

The nervous system becomes less able to maintain the normal sense of connection, familiarity, and presence that usually accompanies experience.

As a result, thoughts, emotions, bodily sensations, and surroundings may no longer feel fully integrated in their usual way.

Rather than affecting a single symptom, this state influences how experience itself is perceived.

Connection to the Five-Axis Stress Biology Framework™

Within the Five-Axis Stress Biology Framework™, depersonalization and derealization reflect changing patterns across multiple interacting systems.

Stress regulation (Axis 1), amplification and excitability processes (Axis 2), autonomic and body-state regulation (Axis 3), sensory and motor integration processes (Axis 4), and neuroimmune or body-state signaling (Axis 5) may all contribute to the overall experience.

Rather than reflecting dysfunction in a single system, these states represent a broader shift in how multiple brain–body systems are functioning together.

Why This State Feels So Frightening

Depersonalization and derealization often feel frightening because they affect the normal sense of familiarity and connection that people usually take for granted.

Many people fear they are going crazy, permanently damaged, or losing touch with reality.

People experiencing these states usually remain aware that the experience feels unusual even while it feels unreal or disconnected.

The experience feels real because the underlying nervous-system state is real.

Although these states can feel profoundly strange and distressing, they do not necessarily indicate psychosis, loss of identity, or permanent brain injury.

Important Clarification

Depersonalization and derealization can fluctuate, overlap with other nervous-system states, and change over time.

Some people experience these states briefly during periods of overload, hyperarousal, exhaustion, or nervous-system strain. Others may experience them more persistently during periods of destabilization.

These states reflect changing patterns of nervous-system regulation and altered patterns of experience—not personal weakness, failure, or permanent damage.

Figure 4. Depersonalization and derealization reflect altered experiential states in which the normal sense of connection to the self, body, or surrounding world may feel disrupted.

Looking Ahead

Not all nervous-system states involve altered experience or reduced activation.

In the next article, we will examine motor activation and akathisia-like states, in which the nervous system shifts toward intense physical restlessness, tension, and difficulty remaining still.

Selected References

1. Sierra M, David AS. 2011. Depersonalization: A Selective Impairment of Self-Awareness. Consciousness and Cognition. 20(1):99–108.

2. Seth AK. 2013. Interoceptive Inference, Emotion, and the Embodied Self. Trends in Cognitive Sciences. 17(11):565–573.

3. Craig AD. 2009. How Do You Feel—Now? The Anterior Insula and Human Awareness. Nature Reviews Neuroscience. 10(1):59–70.

4. Seth AK, Suzuki K, Critchley HD. 2012. An Interoceptive Predictive Coding Model of Conscious Presence. Frontiers in Psychology. 2:395.