Defensive Responses

By definition, traumatized individuals have experienced a failure of their defensive responses to assure safety… The individual is forced to abandon active, mobilizing defenses (fight or flight) in favor of defenses that are immobilizing: freeze or ‘feigned death.’

This passage argues that trauma is fundamentally constituted by the failure of defensive responses, necessitating a therapeutic project of restoring their adaptive, flexible functioning through somatic attention.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis

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The common perpetuating factor in trauma-related disorders appears to be the persistence, even decades later, of altered defensive responses as well as maladaptive orienting responses.

This passage identifies chronically altered defensive responses — not merely cognitive or emotional sequelae — as the primary mechanism sustaining long-term trauma-related disorders.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis

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Defensive responses, much like the orienting responses, are governed by psychobiological action systems… traumatized clients are more likely to overuse the defenses habitually employed at the time of their trauma in response to current minor stressors.

Ogden argues that defensive responses are psychobiological action systems whose over-habituation to past trauma contexts renders them maladaptive in the present, requiring sensorimotor intervention.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis

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Like orienting responses, these defensive responses consist of a series of relatively fixed sequential sensorimotor reactions whose expression depends on the nature of the stimulus, the capacities and experience of the individual, and the external environment.

This passage establishes defensive responses as hierarchically organized sensorimotor sequences combining pre-cognitive fixed action tendencies with consciously mediated contextual fine-tuning.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis

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It is not the use of a particular subsystem, per se, but the inflexibility among these defensive subsystems and their overactivity that contributes to the traumatized person’s distress after the traumatic event is over.

Ogden locates pathology not in any specific defensive response but in the rigidity and overactivation of the defensive subsystem as a whole following trauma.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis

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The orienting that occurs during trauma typically precedes a cascade of defensive responses that are necessary and adaptive in the context of survival. However, trauma-related orienting tendencies become maladaptive if the client is subsequently prevented from orienting to additional information that confirms the absence of current threat.

Ogden frames defensive responses as initially adaptive cascades triggered by orienting, which become maladaptive when the subsequent informational feedback loop confirming safety is blocked.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis

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This is not a somatic rewriting of history: It is a completion as the body is allowed to execute, and thereby restore, the defensive res[ponse].

Ogden distinguishes therapeutic somatic completion of interrupted defensive responses from historical revision, framing it as restoration of an action potential foreclosed at the moment of trauma.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting

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Several authors have observed a striking analogy between certain animal defensive responses and aspects of trauma-induced psychopathology in humans… the rapid reflex-like character and evolutionary value of these reactions is emphasized.

Nijenhuis traces a century-long tradition mapping animal defensive responses onto human trauma psychopathology, grounding somatoform dissociation in phylogenetically conserved defense repertoires.

Nijenhuis, Ellert, Somatoform Dissociation: Phenomena, Measurement, and Theoretical Issues, 2004supporting

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All mammals, including humans, are equipped with a cascade of defensive reactions in a hierarchical system designed to protect them against threat, from mild to severe… When triggered by current stresses or reminders, clients are more likely to use the animal defenses that they habitually employed during past events.

This passage frames the clinical task as helping clients recognize dysregulated animal defensive responses as instinctive protective actions rendered non-adaptive by habituation to past traumatic contexts.

Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting

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The freeze response is characterized by high sympathetic nervous system arousal and hyper attentiveness, combined with a feeling of being unable to move… a shutdown defense, or ‘feigned death,’ is powered by the dorsal vagal branch of the parasympathetic system.

Ogden differentiates two immobilizing defensive responses — freeze and feigned death — by their distinct autonomic substrates, contrasting sympathetic hyperarousal with dorsal vagal hypoarousal.

Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting

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Freezing has the lowest threshold and so is activated first. But then the prey’s changing position in the imminence sequence triggers the activation of a new response and the inhibition of other options.

LeDoux presents defensive responses as imminence-sequenced circuit activations with shifting thresholds, offering a neurobiological substrate for the hierarchical unfolding from freeze through flight to fight.

LeDoux, Joseph, Anxious: Using the Brain to Understand and Treat Fear and Anxiety, 2015supporting

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When a defensive survival circuit detects a threat… the threshold for the expression of additional defensive responses is lowered, whereas other motivated behaviors, such as eating, drinking, sex, or sleep, are suppressed.

LeDoux describes how threat detection by defensive survival circuits lowers the threshold for further defensive responses while globally suppressing competing motivational systems.

LeDoux, Joseph, Anxious: Using the Brain to Understand and Treat Fear and Anxiety, 2015supporting

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The fight response is characteristically provoked when the prey feels trapped, under attack, or when aggression is perceived as capable of securing safety… Impulses for fight behavior are often experienced somatically by clients as tension in the hands, arms, shoulders.

Ogden specifies the somatic phenomenology of the fight defensive response, linking its triggering conditions to entrapment or perceived efficacy of aggression and mapping its bodily expression for clinical access.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting

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When a predator rapidly approaches and comes close, the prey again dramatically changes its behavior in that it suddenly displays an explosive escape response… as well as aggressive behavior.

Nijenhuis details the circa-strike behavioral shift in the animal defensive sequence, offering a phylogenetic model for the escalating and switching quality of defensive responses in traumatized humans.

Nijenhuis, Ellert, Somatoform Dissociation: Phenomena, Measurement, and Theoretical Issues, 2004supporting

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During the step-by-step exposure of Martin to his Viet Nam experience… Martin reported a tension in his thighs and some small restless leg movements and then realized that he ‘wanted to flee.’

This clinical vignette illustrates how involuntary somatic micromovements serve as access points to mobilizing defensive responses arrested at the moment of trauma, enabling their therapeutic discharge.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting

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These responses fall into two general types: mobilizing actions, such as crying for help, fighting, and fleeing, and immobilizing actions that keep us from moving when the mobilizing ones are ineffective, such as freezing and shutting down or feigning death.

Ogden taxonomizes animal defensive responses into mobilizing and immobilizing categories, specifying their adaptive hierarchy and the conditions under which each becomes the more effective option.

Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting

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In a state of alert type 1 freezing, she remained immobile, muscles contracted to prepare for action, eyes glued to the man and the knife as she assessed options for action.

Through a clinical vignette, Ogden illustrates alert-type freezing as an active, preparatory defensive response involving muscular readiness and conscious option-appraisal rather than passive collapse.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting

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Human infants can display a sudden, catatanoid state when exposed to threat… maturational processes have a role, because the quality of human infant responses to threatening situations changes with age.

Nijenhuis establishes the early developmental availability of defensive responses in humans, documenting how their qualitative expression is subject to sensorimotor and cognitive maturation.

Nijenhuis, Ellert, Somatoform Dissociation: Phenomena, Measurement, and Theoretical Issues, 2004supporting

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The CeA controls not only behavioral (freezing) responses but also changes in the body mediated by the autonomic nervous system and endocrine system.

LeDoux identifies the central amygdala as the nexus controlling both the behavioral and autonomic dimensions of defensive responses, integrating freezing behavior with systemic physiological mobilization.

LeDoux, Joseph, Anxious: Using the Brain to Understand and Treat Fear and Anxiety, 2015supporting

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Greater intensities, longer duration, more regular threat experiences can damage defensive fear systems, possibly accounting for reduced escape-related defensive tendencies in distress disorders.

Lench presents evidence that cumulative or prolonged threat exposure structurally damages defensive fear systems, providing a mechanism linking chronic stress to impaired defensive response expression in distress disorders.

Lench, Heather C., The Function of Emotions: When and Why Emotions Help Us, 2018supporting

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Marcy realized that her anger was originally meant to fuel a ‘fight back’ defensive response that she could not act upon during the abu[se].

This case vignette demonstrates how unexpressed affect is reframed as the motivational fuel for an aborted fight defensive response, recoverable through mindful somatic enactment in therapy.

Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting

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The worksheets… provide an avenue for clients to experiment with the connection between memory, habitual animal defensive reactions, and the potential for practicing more empowering and regulated actions.

Ogden describes a structured clinical methodology for connecting traumatic memory to habitual defensive responses and facilitating their transformation into integrated, empowering actions.

Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting

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Trauma-related expectations of impending danger often disrupt extended appraisal and revision processes in traumatized individuals, and they are therefore prone to respond to perceived threat cues and traumatic reminders with defensive action.

Ogden argues that traumatic anticipatory bias short-circuits the appraisal process, triggering premature defensive action before contextual revision can moderate the response.

Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting

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Much of our current understanding of the brain’s control over defensive behavior and its physiological support is based on studies that have used real threats, sensory stimuli that activate defense circuits in a natural way.

LeDoux provides methodological grounding for the neuroscience of defensive behavior, noting that naturalistic threat paradigms — rather than direct stimulation — best reveal the complete defensive response circuitry.

LeDoux, Joseph, Anxious: Using the Brain to Understand and Treat Fear and Anxiety, 2015aside

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People defend, of course, in response to perceived attack or threat. A more than passing presence of signs such as these is information that the client is feeling personally threatened at present.

Miller applies a loosely analogous concept of defensive responses to the interpersonal register of motivational interviewing, reading client defensiveness as a signal of perceived therapeutic threat to autonomy or self-esteem.

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