How the Trager™ approach acts on the nervous system

2026-03-17 — Sonya Granel

The Trager™ approach represents a unique psychosomatic method that acts directly on the nervous system through gentle and rhythmic movements. Developed by Dr. Milton Trager, this approach uses precise neurophysiological principles to induce profound changes in neuromotor organization.

This method is distinguished by its ability to simultaneously influence the autonomic and somatic nervous systems. Practitioners use oscillatory movements and passive mobilizations that create specific sensory stimulations, allowing the nervous system to reorganize toward a state of relaxation and fluidity.

Understanding how the Trager™ approach acts on the nervous system allows for optimizing its therapeutic benefits and adapting interventions according to individual needs.

The neurobiological foundations of the Trager™ approach

The action of the Trager™ approach on the nervous system is based on several fundamental neurobiological mechanisms that activate sequentially and in an integrated manner.

Stimulation of mechanoreceptors

Trager™ movements specifically activate cutaneous and proprioceptive mechanoreceptors. These sensory receptors transmit information to the central nervous system via rapid afferent pathways.

This stimulation generates a cascade of neurophysiological responses:

• Activation of large-caliber nerve fibers (A-beta)
• Modulation of nociceptive transmission according to gate control theory
• Stimulation of descending pain control centers

Influence on neurotransmitters

The Trager™ approach promotes the release of specific neurotransmitters that modify the state of the nervous system. Endorphins, serotonin, and GABA are particularly involved in this neurochemical response.

Step 1: Activation of the parasympathetic nervous system

The first step of action of the Trager™ approach consists of shifting the autonomic nervous system toward its parasympathetic branch, responsible for relaxation and recovery.

Initial contact technique

The practitioner establishes gentle and stable contact, creating non-threatening tactile stimulation. This progressive approach helps avoid activation of defensive reflexes.

1. Hand placement with light and constant pressure
2. Maintaining contact for 30 to 60 seconds
3. Observing signs of relaxation (breathing, muscle tension)
4. Adjusting pressure according to patient receptivity

Physiological indicators of activation

Several signs indicate activation of the parasympathetic system:

• Slowing of heart rate
• Deepening of breathing
• Decrease in muscle tension
• Increase in skin temperature

Step 2: Modulation of sensory perception

The second step involves modifying sensory integration at the level of the central nervous system, particularly in the somatosensory cortex and thalamus.

Oscillatory and rhythmic movements

Practitioners use specific movements that create repetitive sensory patterns. These rhythmic stimulations influence brain electrical activity.

1. Initiation of slow and regular movements (0.5 to 2 Hz)
2. Maintaining a constant rhythm for 3 to 5 minutes
3. Progressive variation of movement amplitude
4. Synchronization with patient breathing

Induced sensory plasticity

This sensory modulation creates changes in body representation at the cortical level. The nervous system develops new, more functional sensory integration patterns.

Step 3: Neuromotor integration and brain plasticity

The third step concerns the integration of new sensory information into motor programs, involving the cerebellum, basal ganglia, and motor cortex.

Facilitation of new motor patterns

The Trager™ approach facilitates the emergence of new neuromotor patterns through passive exploration of fluid and free movements.

1. Passive mobilization in different movement planes
2. Exploration of joint ranges without forcing
3. Seeking fluidity and ease of movement
4. Repetition to reinforce motor learning

Neuroplasticity and memorization

The nervous system memorizes these new sensorimotor experiences through synaptic plasticity mechanisms. This integration continues well beyond the session.

Practical tips for optimizing action on the nervous system

Therapeutic environment

The environment plays a crucial role in the effectiveness of the Trager™ approach on the nervous system.

• Temperature: Maintain a comfortable temperature (22-24°C)
• Lighting: Use dim and indirect lighting
• Sound: Minimize disruptive noises
• Security: Create a sense of safety and trust

Adaptation according to neurological profile

Each individual presents different nervous system reactivity. The approach must be personalized:

• Hypervigilant patients: Slower progression, minimal initial contact
• Hyporeactive nervous system: More pronounced and varied stimulations
• Neurological disorders: Adaptation according to specific pathology

Important precautions

Attention: Certain conditions require particular precautions when applying the Trager™ approach:

• Recent head trauma
• Uncontrolled epilepsy
• Acute psychiatric disorders
• Severe tactile hypersensitivity

Measuring neurophysiological effects

Objective indicators

Several parameters allow evaluation of the action of the Trager™ approach on the nervous system:

• Heart rate variability (HRV)
• Skin conductance
• Surface electromyography
• Blood pressure measurement

Subjective evaluation

Evaluation of subjective experience complements objective analysis:

1. Perceived relaxation scale (0-10)
2. Quality of body perception
3. Overall sense of well-being
4. Duration of post-session effects

The Trager™ approach acts on the nervous system through complex and integrated neurobiological mechanisms. This scientific understanding allows for optimizing therapeutic application and adapting interventions to the specific needs of each patient. The sequential progression - parasympathetic activation, sensory modulation, and neuromotor integration - creates lasting changes in nervous system organization, promoting a state of deep relaxation and better bodily functionality.