Within the depth-psychology corpus, and most systematically in the sensorimotor tradition developed by Pat Ogden, 'mobilizing defense' names the class of sympathetically mediated survival responses — fight, flight, and cry for help — that prepare the organism for active engagement with threat. The term is defined structurally against its counterpart, the immobilizing defense (freeze, feigned death/shutdown), which is parasympathetically governed. Ogden's work is unambiguous: mobilizing defenses represent the body's first active line of resistance once the social engagement system has failed to neutralize danger, and their interrupted or incomplete execution at the moment of trauma becomes, in her account, a central somatic substrate of post-traumatic symptomatology. The therapeutic intervention thus becomes, precisely, the careful re-mobilization of these arrested action tendencies — enabling the body to complete, in mindful safety, the defensive movement sequences it could not execute at the time of the traumatic event. A recurring clinical observation across multiple case vignettes is that the impulse to mobilize emerges not from cognitive reappraisal but from somatic awareness itself, lending the construct its distinctive phenomenological weight. The corpus shows no serious dissent from this framework within the sensorimotor domain, though broader psychoanalytic and classical sources do not address the term.
In the library
16 passages
the nascent mobilizing defense that she had not been able to execute. What helped it emerge was taking one moment in Ashley's memory where it was likely that mobilizing defenses were experienced but not executed
This passage defines the therapeutic technique of isolating a 'sliver' of traumatic memory to surface the unexecuted mobilizing defense — here, the impulse to form a fist — and allow it to complete as a new empowering action.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis
Realizing that the moment of threat recognition is a potential indicator of a mobilizing flight response, the therapist encouraged Martin to focus on what happened in his body... it led spontaneously to the execution of a mobilizing defense
Through tracking micro-movements in the legs, the therapist facilitates either spontaneous execution of a mobilizing defense or autonomic discharge, demonstrating that the therapeutic outcome depends on somatic tracking rather than predetermined agenda.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis
The therapist encouraged the slow enactment of this mobilizing defense, which had not been possible at the time of the trauma, holding a pillow for Martin to push against.
This vignette illustrates the core sensorimotor intervention: transitioning a habitual immobilizing defense into its mobilizing counterpart by physically enacting the previously thwarted push-away response.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis
the mobilizing defenses that Jay could not act upon at the time of the mugging arose spontaneously as physical impulses, allowing him to finally feel the power and strength of taking action to defend himself.
Execution of previously blocked mobilizing defenses — fight and flight — restores a felt sense of strength and competence, demonstrating the therapeutic function of completing interrupted survival actions.
Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015thesis
the therapist asked Sally to drop the content of the memory and work with grounding, centering, and pushing to help regulate her arousal and stimulate a mobilizing defense.
When a client falls into hypoarousal and dissociation, grounding and physical pushing are prescribed to actively stimulate a mobilizing defense and restore present-moment embodied engagement.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis
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.
This passage provides the foundational taxonomy: mobilizing defenses (cry for help, fight, flight) are defined in structural opposition to immobilizing defenses, with the latter occurring when the former have failed.
Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015thesis
The social engagement system may provide the first line of defense prior to the mobilizing, sympathetically mediated defenses of fight or flight.
Mobilizing defenses are positioned as the second tier of the defensive hierarchy, activated after relational/social engagement strategies have proved insufficient to neutralize threat.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting
mobilizing defenses of fight are stimulated. Aggressive actions are engaged as the prey/victim tries to fight off the predator/perpetrator by scratching, biting, hitting, kicking, or otherwise struggling.
Drawing on ethological models (Fanselow & Lester), this passage describes how mobilizing fight responses are stimulated when flight has failed, grounding the clinical concept in comparative animal-defense research.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting
she mobilized not only her [body's impulse to push] — the impulse to push emerged from Jenny's awareness of her body as she remembered the assault, and not as an idea or concept.
This case demonstrates that the mobilizing defense arises from somatic awareness, not conceptual intention, underscoring the body-first epistemology central to sensorimotor psychotherapy.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting
Cry-for-help a mobilizing animal defense used by humans and other animals when they feel threatened and want to summon help; also called the 'separation cry' or attachment cry.
The glossary entry formally defines cry-for-help as a mobilizing animal defense, linking it to attachment theory via the 'separation cry' and situating it within the broader taxonomy of animal defenses.
Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting
the social engagement system would automatically give way to the mobilizing fight/flight responses of the sympathetic nervous system.
The autonomic sequencing from social engagement to mobilizing fight/flight is described as automatic, establishing the neurobiological substrate of mobilizing defense within polyvagal-informed theory.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting
An index reference confirms that dysregulated mobilizing defenses are addressed through dedicated clinical worksheets, reflecting their status as a distinct and therapeutically tractable category in sensorimotor practice.
Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting
the persistence, even decades later, of altered defensive responses as well as maladaptive orienting responses... habitual interrupted or ineffective physical defensive movement sequences function as powerful contributors to the maintenance of trauma symptoms
Interrupted mobilizing defenses that persist in altered form are identified as a primary mechanism sustaining long-term trauma symptoms, providing the theoretical rationale for completing thwarted defensive actions in therapy.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting
clients may either have strong emotions (related to animal defenses of cry-for-help, fight, flight, or freeze) or they may become numb and shut down (related to the animal defense of feigned death).
Clinical presentation is mapped directly onto the animal defense taxonomy, with mobilizing defenses linked to hyperaroused emotional expression and immobilizing defenses linked to numbing and shutdown.
Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting
The freeze response is characterized by high sympathetic nervous system arousal and hyper attentiveness, combined with a feeling of being unable to move.
By distinguishing freeze (high-sympathetic, immobile) from shutdown (dorsal vagal, flaccid), this passage clarifies the boundary between mobilizing and immobilizing defense systems, reinforcing the structural contrast on which the term depends.
Ogden, Pat, Sensorimotor Psychotherapy Interventions for Trauma and, 2015supporting
In a state of alert type 1 freezing, she remained immobile, muscles contracted to prepare for action... she rapidly evaluated whether running for the door or reaching for the phone was feasible.
This vignette illustrates the transitional moment between orienting-freeze and the assessment that precedes mobilizing defense, showing how the organism evaluates available mobilizing options before committing to action.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006aside